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style: enforce coding standard — headers, @brief on #define, Doxygen on statics, remove _ prefix, max 8 lines per function

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This commit is contained in:
Kevin Thomas
2026-04-16 22:44:43 -04:00
parent 7f1f647234
commit c386217714
309 changed files with 10464 additions and 6668 deletions
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0x0001_hello-world/0x0001_hello-world.c
+39 -2
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@@ -1,9 +1,46 @@
/**
* @file 0x0001_hello-world.c
* @brief Hello World: print a greeting over UART in an infinite loop
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates the minimal "hello, world" program on the Raspberry Pi Pico 2.
* Initializes stdio over UART and prints a greeting in an infinite loop.
*
* Wiring:
* No external wiring required (USB serial).
*/
#include <stdio.h>
#include "pico/stdlib.h"
int main(void) {
stdio_init_all();
while (true)
while (true) {
printf("hello, world\r\n");
}
}
0x0005_intro-to-variables/0x0005_intro-to-variables.c
+39 -4
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@@ -1,13 +1,48 @@
/**
* @file 0x0005_intro-to-variables.c
* @brief Introduction to variables: declare, assign, and print a uint8_t
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates declaring, initializing, and reassigning a uint8_t variable.
* Prints the variable value over UART in an infinite loop.
*
* Wiring:
* No external wiring required (USB serial).
*/
#include <stdio.h>
#include "pico/stdlib.h"
int main(void) {
uint8_t age = 42;
age = 43;
stdio_init_all();
while (true)
while (true) {
printf("age: %d\r\n", age);
}
}
0x0008_unitialized-variables-a/0x0008_unitialized-variables-a.c
+40 -5
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@@ -1,17 +1,52 @@
/**
* @file 0x0008_unitialized-variables-a.c
* @brief Blink LED using SDK gpio functions (no UART)
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Blinks an LED on GPIO16 using the standard Pico SDK gpio_init / gpio_put
* functions. No UART output; pure GPIO blink demonstration.
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#define LED_PIN 16
/** @brief GPIO pin number for the LED */
#define LED_PIN 16
int main(void)
{
int main(void) {
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
while (true) {
gpio_put(LED_PIN, 1);
sleep_ms(500);
gpio_put(LED_PIN, 0);
sleep_ms(500);
}
0x0008_unitialized-variables-b/0x0008_unitialized-variables-b.c
+68 -15
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@@ -1,27 +1,80 @@
/**
* @file 0x0008_unitialized-variables-b.c
* @brief Blink LED using gpioc coprocessor bit-level functions
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Blinks an LED on GPIO16 using the RP2350 gpioc coprocessor bit-level
* functions (gpioc_bit_oe_put / gpioc_bit_out_put) instead of the standard
* gpio_init / gpio_put SDK calls.
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#define LED_PIN 16
/** @brief GPIO pin number for the LED */
#define LED_PIN 16
int main(void)
{
// gpio_init(LED_PIN);
/**
* @brief Initialize GPIO16 for output using coprocessor bit functions
*
* @details Configures the pad for SIO, sets direction to input first,
* clears the output, selects SIO function, then enables output.
*
* @retval None
*/
static void gpio_coprocessor_init(void) {
gpio_set_dir(LED_PIN, GPIO_IN);
gpio_put(LED_PIN, 0);
gpio_set_function(LED_PIN, GPIO_FUNC_SIO);
// gpio_set_dir(LED_PIN, GPIO_OUT);
gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
}
/**
* @brief Blink LED using coprocessor bit output functions
*
* @details Toggles the LED on and off with 500ms delays using
* gpioc_bit_out_put and sleep_us.
*
* @retval None
*/
static void blink_cycle(void) {
gpioc_bit_out_put(LED_PIN, 1);
sleep_us(500 * 1000ull);
gpioc_bit_out_put(LED_PIN, 0);
sleep_us(500 * 1000ull);
}
int main(void) {
gpio_coprocessor_init();
while (true) {
// gpio_put(LED_PIN, 1);
gpioc_bit_out_put(LED_PIN, 1);
// sleep_ms(500);
sleep_us(500 * 1000ull);
// gpio_put(LED_PIN, 0);
gpioc_bit_out_put(LED_PIN, 0);
// sleep_ms(500);
sleep_us(500 * 1000ull);
blink_cycle();
}
}
0x0008_unitialized-variables-c/0x0008_unitialized-variables-c.c
+70 -20
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@@ -1,35 +1,85 @@
/**
* @file 0x0008_unitialized-variables-c.c
* @brief Blink LED using direct register-level pad and IO bank configuration
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Blinks an LED on GPIO16 using direct register writes to PADS_BANK0 and
* IO_BANK0 for pad configuration, plus gpioc coprocessor bit-level functions
* for output enable and data. Demonstrates the register-level equivalent of
* gpio_init / gpio_set_function.
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#define LED_PIN 16
/** @brief GPIO pin number for the LED */
#define LED_PIN 16
int main(void)
{
// gpio_init(LED_PIN);
/// gpio_set_dir(LED_PIN, GPIO_IN);
/**
* @brief Configure pad and IO bank registers for GPIO16 as SIO output
*
* @details Sets PADS_BANK0 IE/OD bits, assigns FUNCSEL to SIO in IO_BANK0,
* clears the ISO bit, and enables output via the coprocessor.
*
* @retval None
*/
static void configure_pad_and_iobank(void) {
gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
/// gpio_put(LED_PIN, 0);
gpioc_bit_out_put(LED_PIN, 0);
/// gpio_set_function(LED_PIN, GPIO_FUNC_SIO);
hw_write_masked(&pads_bank0_hw->io[LED_PIN],
PADS_BANK0_GPIO0_IE_BITS,
PADS_BANK0_GPIO0_IE_BITS | PADS_BANK0_GPIO0_OD_BITS
);
PADS_BANK0_GPIO0_IE_BITS | PADS_BANK0_GPIO0_OD_BITS);
io_bank0_hw->io[LED_PIN].ctrl = GPIO_FUNC_SIO << IO_BANK0_GPIO0_CTRL_FUNCSEL_LSB;
hw_clear_bits(&pads_bank0_hw->io[LED_PIN], PADS_BANK0_GPIO0_ISO_BITS);
// gpio_set_dir(LED_PIN, GPIO_OUT);
gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
}
/**
* @brief Blink LED using coprocessor bit output functions
*
* @details Toggles the LED on and off with 500ms delays using
* gpioc_bit_out_put and sleep_us.
*
* @retval None
*/
static void blink_cycle(void) {
gpioc_bit_out_put(LED_PIN, 1);
sleep_us(500 * 1000ull);
gpioc_bit_out_put(LED_PIN, 0);
sleep_us(500 * 1000ull);
}
int main(void) {
configure_pad_and_iobank();
while (true) {
// gpio_put(LED_PIN, 1);
gpioc_bit_out_put(LED_PIN, 1);
// sleep_ms(500);
sleep_us(500 * 1000ull);
// gpio_put(LED_PIN, 0);
gpioc_bit_out_put(LED_PIN, 0);
// sleep_ms(500);
sleep_us(500 * 1000ull);
blink_cycle();
}
}
0x0008_unitialized-variables-d/0x0008_unitialized-variables-d.c
+105 -31
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@@ -1,23 +1,70 @@
/**
* @file 0x0008_unitialized-variables-d.c
* @brief Blink LED using pico_default_asm_volatile coprocessor instructions
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Blinks an LED on GPIO16 using pico_default_asm_volatile to emit mcrr
* coprocessor instructions for GPIO output enable and data, plus inline
* assembly for pad configuration (hw_write_masked, IO_BANK0 FUNCSEL,
* hw_clear_bits equivalents).
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#define LED_PIN 16
/** @brief GPIO pin number for the LED */
#define LED_PIN 16
int main(void)
{
// gpio_init(LED_PIN);
/// gpio_set_dir(LED_PIN, GPIO_IN);
//// gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
/**
* @brief Enable output and set initial coprocessor OE/OUT via mcrr
*
* @details Issues two mcrr p0 instructions: one to enable output direction,
* one to set the initial output state.
*
* @retval None
*/
static void asm_set_oe_and_out(void) {
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c4" : : "r" (LED_PIN), "r" (GPIO_OUT));
/// gpio_put(LED_PIN, 0);
//// gpioc_bit_out_put(LED_PIN, 0);
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c4" : : "r" (LED_PIN), "r" (GPIO_OUT));
/// gpio_set_function(LED_PIN, GPIO_FUNC_SIO);
//// hw_write_masked(&pads_bank0_hw->io[LED_PIN],
//// PADS_BANK0_GPIO0_IE_BITS,
//// PADS_BANK0_GPIO0_IE_BITS | PADS_BANK0_GPIO0_OD_BITS
//// );
//// hw_xor_bits(addr, (*addr ^ values) & write_mask);
}
/**
* @brief Configure PADS_BANK0 IE/OD bits via inline assembly hw_xor_bits
*
* @details Performs a read-modify-write on the pad register to set IE
* and clear OD, replicating hw_write_masked behavior.
*
* @retval None
*/
static void asm_configure_pad(void) {
pico_default_asm_volatile (
"ldr r2, [%0]\n" // load current pad register
"eor r2, r2, %1\n" // xor with IE bit
@@ -30,8 +77,17 @@ int main(void)
"r" (PADS_BANK0_GPIO0_IE_BITS | PADS_BANK0_GPIO0_OD_BITS)
: "r2", "memory"
);
}
/// io_bank0_hw->io[LED_PIN].ctrl = GPIO_FUNC_SIO << IO_BANK0_GPIO0_CTRL_FUNCSEL_LSB;
/**
* @brief Set IO_BANK0 FUNCSEL to SIO via inline assembly store
*
* @details Writes the SIO function select value directly to the
* IO_BANK0 GPIO control register.
*
* @retval None
*/
static void asm_set_funcsel(void) {
pico_default_asm_volatile (
"str %1, [%0]\n"
:
@@ -39,32 +95,50 @@ int main(void)
"r" (GPIO_FUNC_SIO << IO_BANK0_GPIO0_CTRL_FUNCSEL_LSB)
: "memory"
);
/// hw_clear_bits(&pads_bank0_hw->io[LED_PIN], PADS_BANK0_GPIO0_ISO_BITS);
}
/**
* @brief Clear ISO bits in PADS_BANK0 via inline assembly
*
* @details Performs a read-modify-write to clear the pad isolation
* bit, un-isolating the pad for normal operation.
*
* @retval None
*/
static void asm_clear_iso(void) {
pico_default_asm_volatile (
"ldr r2, [%0]\n" // load current register value
"bic r2, r2, %1\n" // clear the ISO bits (bit clear)
"str r2, [%0]\n" // write back
"str r2, [%0]\n" // write back
:
: "r" (&pads_bank0_hw->io[LED_PIN]),
"r" (PADS_BANK0_GPIO0_ISO_BITS)
: "r2", "memory"
);
}
// gpio_set_dir(LED_PIN, GPIO_OUT);
/// gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
/**
* @brief Blink LED using coprocessor mcrr output instructions
*
* @details Toggles the LED on and off with 500ms delays using
* pico_default_asm_volatile mcrr instructions.
*
* @retval None
*/
static void asm_blink_cycle(void) {
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c0" : : "r" (LED_PIN), "r" (1));
sleep_us(500 * 1000ull);
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c0" : : "r" (LED_PIN), "r" (0));
sleep_us(500 * 1000ull);
}
int main(void) {
asm_set_oe_and_out();
asm_configure_pad();
asm_set_funcsel();
asm_clear_iso();
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c4" : : "r" (LED_PIN), "r" (GPIO_OUT));
while (true) {
// gpio_put(LED_PIN, 1);
/// gpioc_bit_out_put(LED_PIN, 1);
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c0" : : "r" (LED_PIN), "r" (1));
/// sleep_ms(500);
sleep_us(500 * 1000ull);
// gpio_put(LED_PIN, 0);
/// gpioc_bit_out_put(LED_PIN, 0);
pico_default_asm_volatile ("mcrr p0, #4, %0, %1, c0" : : "r" (LED_PIN), "r" (0));
/// sleep_ms(500);
sleep_us(500 * 1000ull);
asm_blink_cycle();
}
}
0x0008_unitialized-variables-e/0x0008_unitialized-variables-e.c
+40 -2
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@@ -1,5 +1,43 @@
int main(void) {
__asm__ volatile (
/**
* @file 0x0008_unitialized-variables-e.c
* @brief Blink LED using pure inline ARM assembly with direct register addresses
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Blinks an LED on GPIO16 using pure inline ARM assembly. No SDK calls, no
* includes. Configures PADS_BANK0, IO_BANK0, and GPIO coprocessor via direct
* register addresses and mcrr instructions, with a busy-wait delay loop.
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
int main(void) {
__asm__ volatile (
// gpio_init(LED_PIN);
/// gpio_set_dir(LED_PIN, GPIO_IN);
//// gpioc_bit_oe_put(LED_PIN, GPIO_OUT);
0x0008_unitialized-variables/0x0008_unitialized-variables.c
+56 -11
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@@ -1,23 +1,68 @@
/**
* @file 0x0008_unitialized-variables.c
* @brief Uninitialized variables: demonstrate undefined behavior with printf
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates the danger of uninitialized variables. Prints the value of an
* uninitialized uint8_t over UART while blinking an LED on GPIO16.
*
* Wiring:
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#define LED_PIN 16
/** @brief GPIO pin number for the LED */
#define LED_PIN 16
/**
* @brief Toggle LED and print uninitialized variable value
*
* @details Blinks the LED on and off with a 500ms delay between each
* transition and prints the age variable each cycle.
*
* @param age value to print (uninitialized in this demo)
*/
static void blink_and_print(uint8_t age) {
printf("age: %d\r\n", age);
gpio_put(LED_PIN, 1);
sleep_ms(500);
gpio_put(LED_PIN, 0);
sleep_ms(500);
}
int main(void) {
uint8_t age;
stdio_init_all();
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
while (true) {
printf("age: %d\r\n", age);
gpio_put(LED_PIN, 1);
sleep_ms(500);
gpio_put(LED_PIN, 0);
sleep_ms(500);
blink_and_print(age);
}
}
0x000b_integer-data-type/0x000b_integer-data-type.c
+107 -42
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@@ -1,17 +1,59 @@
#include <stdio.h>
#include "pico/stdlib.h"
/**
* @file 0x000b_integer-data-type.c
* @brief Integer data types: cycle LEDs on GPIO16-18 with asm, print int values
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates uint8_t and int8_t integer data types. Initializes GPIO16-18
* via inline assembly (PADS_BANK0, IO_BANK0, coprocessor OE), then cycles
* LEDs using coprocessor mcrr instructions while printing integer values.
*
* Wiring:
* GPIO16 -> LED1 anode (with current-limiting resistor to GND)
* GPIO17 -> LED2 anode (with current-limiting resistor to GND)
* GPIO18 -> LED3 anode (with current-limiting resistor to GND)
*/
int main(void) {
uint8_t age = 43;
int8_t range = -42;
#include <stdio.h>
#include "pico/stdlib.h"
stdio_init_all();
__asm volatile (
/**
* @brief Initialize GPIO16-18 as SIO outputs via inline assembly loop
*
* @details Configures PADS_BANK0 (clear OD+ISO, set IE), IO_BANK0
* (FUNCSEL=5 SIO), and coprocessor OE for pins 16-18.
*
* @retval None
*/
static void asm_init_gpio_range(void) {
__asm volatile (
"ldr r3, =0x40038000\n" // address of PADS_BANK0_BASE
"ldr r2, =0x40028004\n" // address of IO_BANK0 GPIO0.ctrl
"movs r0, #16\n" // GPIO16 (start pin)
"init_loop:\n" // loop start
"lsls r1, r0, #2\n" // pin * 4 (pad offset)
"adds r4, r3, r1\n" // PADS base + offset
@@ -19,49 +61,72 @@ int main(void) {
"bic r5, r5, #0x180\n" // clear OD+ISO
"orr r5, r5, #0x40\n" // set IE
"str r5, [r4]\n" // store updated config
"lsls r1, r0, #3\n" // pin * 8 (ctrl offset)
"adds r4, r2, r1\n" // IO_BANK0 base + offset
"ldr r5, [r4]\n" // load current config
"bic r5, r5, #0x1f\n" // clear FUNCSEL bits [4:0]
"orr r5, r5, #5\n" // set FUNCSEL = 5 (SIO)
"str r5, [r4]\n" // store updated config
"mov r4, r0\n" // pin
"movs r5, #1\n" // bit 1; used for OUT/OE writes
"mcrr p0, #4, r4, r5, c4\n" // gpioc_bit_oe_put(pin,1)
"adds r0, r0, #1\n" // increment pin
"cmp r0, #20\n" // stop after pin 18
"blt init_loop\n" // loop until r0 == 20
);
uint8_t pin = 16;
while (1) {
__asm volatile (
"mov r4, %0\n" // pin
"movs r5, #0x01\n" // bit 1; used for OUT/OE writes
"mcrr p0, #4, r4, r5, c0\n" // gpioc_bit_out_put(16, 1)
:
: "r"(pin)
: "r4","r5"
);
sleep_ms(500);
__asm volatile (
"mov r4, %0\n" // pin
"movs r5, #0\n" // bit 0; used for OUT/OE writes
"mcrr p0, #4, r4, r5, c0\n" // gpioc_bit_out_put(16, 0)
:
: "r"(pin)
: "r4","r5"
);
sleep_ms(500);
pin++;
if (pin > 18) pin = 16;
printf("age: %d\r\n", age);
printf("range: %d\r\n", range);
}
);
}
/**
* @brief Blink a single pin using coprocessor mcrr instructions
*
* @details Turns the specified pin on for 500ms, then off for 500ms
* using inline asm mcrr coprocessor output instructions.
*
* @param pin GPIO pin number to blink
* @retval None
*/
static void asm_blink_pin(uint8_t pin) {
__asm volatile (
"mov r4, %0\n"
"movs r5, #0x01\n"
"mcrr p0, #4, r4, r5, c0\n"
: : "r"(pin) : "r4", "r5"
);
sleep_ms(500);
__asm volatile (
"mov r4, %0\n"
"movs r5, #0\n"
"mcrr p0, #4, r4, r5, c0\n"
: : "r"(pin) : "r4", "r5"
);
sleep_ms(500);
}
/**
* @brief Blink LED, advance pin, and print age/range
*
* @details Blinks the current pin, wraps pin 16-18,
* and prints both integer variables.
*
* @param pin pointer to the current GPIO pin number
* @param age unsigned 8-bit age value
* @param range signed 8-bit range value
* @retval None
*/
static void blink_and_print(uint8_t *pin, uint8_t age, int8_t range) {
asm_blink_pin(*pin);
*pin = (*pin > 18) ? 16 : *pin + 1;
printf("age: %d\r\n", age);
printf("range: %d\r\n", range);
}
int main(void) {
uint8_t age = 43;
int8_t range = -42;
stdio_init_all();
asm_init_gpio_range();
uint8_t pin = 16;
while (1) {
blink_and_print(&pin, age, range);
}
}
0x000e_floating-point-data-type/0x000e_floating-point-data-type.c
+39 -3
View File
@@ -1,11 +1,47 @@
/**
* @file 0x000e_floating-point-data-type.c
* @brief Floating-point data type: print a float value over UART
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates the float data type on the Raspberry Pi Pico 2. Initializes
* a float variable and prints its value over UART in an infinite loop.
*
* Wiring:
* No external wiring required (USB serial).
*/
#include <stdio.h>
#include "pico/stdlib.h"
int main(void) {
float fav_num = 42.5;
stdio_init_all();
while (true)
while (true) {
printf("fav_num: %f\r\n", fav_num);
}
}
0x0011_double-floating-point-data-type/0x0011_double-floating-point-data-type.c
+39 -3
View File
@@ -1,11 +1,47 @@
/**
* @file 0x0011_double-floating-point-data-type.c
* @brief Double floating-point data type: print a double value over UART
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates the double data type on the Raspberry Pi Pico 2. Initializes
* a double variable and prints its value over UART in an infinite loop.
*
* Wiring:
* No external wiring required (USB serial).
*/
#include <stdio.h>
#include "pico/stdlib.h"
int main(void) {
double fav_num = 42.52525;
stdio_init_all();
while (true)
while (true) {
printf("fav_num: %lf\r\n", fav_num);
}
}
0x0014_static-variables/0x0014_static-variables.c
+77 -18
View File
@@ -1,31 +1,90 @@
/**
* @file 0x0014_static-variables.c
* @brief Static variables: compare regular vs static local variable persistence
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates the difference between regular and static local variables.
* A regular variable resets to 42 each iteration while a static variable
* persists and increments across loop iterations. Also reads a button on
* GPIO15 and mirrors its state to an LED on GPIO16.
*
* Wiring:
* GPIO15 -> Button (with pull-up, active low)
* GPIO16 -> LED anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include "pico/stdlib.h"
int main(void) {
stdio_init_all();
const uint BUTTON_GPIO = 15;
const uint LED_GPIO = 16;
bool pressed = 0;
/** @brief GPIO pin number for the button input */
#define BUTTON_GPIO 15
/** @brief GPIO pin number for the LED output */
#define LED_GPIO 16
/**
* @brief Initialize button and LED GPIO pins
*
* @details Configures the button pin as input with pull-up and the
* LED pin as output.
*
* @retval None
*/
static void init_gpio(void) {
gpio_init(BUTTON_GPIO);
gpio_set_dir(BUTTON_GPIO, GPIO_IN);
gpio_pull_up(BUTTON_GPIO);
gpio_init(LED_GPIO);
gpio_set_dir(LED_GPIO, GPIO_OUT);
}
/**
* @brief Print and increment regular vs static variables, update LED
*
* @details Prints both variable values, increments them, reads the
* button state and drives the LED accordingly.
*
* @retval None
*/
static void demo_static_variable(void) {
uint8_t regular_fav_num = 42;
static uint8_t static_fav_num = 42;
printf("regular_fav_num: %d\r\n", regular_fav_num);
printf("static_fav_num: %d\r\n", static_fav_num);
regular_fav_num++;
static_fav_num++;
bool pressed = gpio_get(BUTTON_GPIO);
gpio_put(LED_GPIO, pressed ? 0 : 1);
}
int main(void) {
stdio_init_all();
init_gpio();
while (true) {
uint8_t regular_fav_num = 42;
static uint8_t static_fav_num = 42;
printf("regular_fav_num: %d\r\n", regular_fav_num);
printf("static_fav_num: %d\r\n", static_fav_num);
regular_fav_num++;
static_fav_num++;
pressed = gpio_get(BUTTON_GPIO);
gpio_put(LED_GPIO, pressed ? 0 : 1);
demo_static_variable();
}
}
0x0017_constants/0x0017_constants.c
+72 -7
View File
@@ -1,33 +1,98 @@
/**
* @file 0x0017_constants.c
* @brief Constants: demonstrate #define and const with LCD1602 I2C display
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates #define macro constants and const-qualified variables.
* Initializes an LCD1602 display over I2C and prints constant values
* over UART in an infinite loop.
*
* Wiring:
* GPIO2 (SDA) -> LCD1602 PCF8574 SDA
* GPIO3 (SCL) -> LCD1602 PCF8574 SCL
* 3V3 -> LCD1602 VCC
* GND -> LCD1602 GND
*/
#include <stdio.h>
#include <string.h>
#include "pico/stdlib.h"
#include "hardware/i2c.h"
#include "lcd_1602.h"
#define FAV_NUM 42
#define I2C_PORT i2c1
/** @brief Macro constant for favorite number */
#define FAV_NUM 42
/** @brief I2C peripheral instance */
#define I2C_PORT i2c1
/** @brief GPIO pin for I2C SDA */
#define I2C_SDA_PIN 2
/** @brief GPIO pin for I2C SCL */
#define I2C_SCL_PIN 3
/** @brief Const-qualified favorite number */
const int OTHER_FAV_NUM = 1337;
int main(void) {
stdio_init_all();
/**
* @brief Initialize I2C bus and LCD1602 display
*
* @details Configures I2C1 at 100kHz on GPIO2/3, initializes the
* LCD via PCF8574 at address 0x27, and writes two lines.
*
* @retval None
*/
static void init_i2c_and_lcd(void) {
i2c_init(I2C_PORT, 100000);
gpio_set_function(I2C_SDA_PIN, GPIO_FUNC_I2C);
gpio_set_function(I2C_SCL_PIN, GPIO_FUNC_I2C);
gpio_pull_up(I2C_SDA_PIN);
gpio_pull_up(I2C_SCL_PIN);
lcd_i2c_init(I2C_PORT, 0x27, 4, 0x08);
}
/**
* @brief Write greeting text to the LCD display
*
* @details Sets cursor to line 0 and writes "Reverse", then sets
* cursor to line 1 and writes "Engineering".
*
* @retval None
*/
static void write_lcd_greeting(void) {
lcd_set_cursor(0, 0);
lcd_puts("Reverse");
lcd_set_cursor(1, 0);
lcd_puts("Engineering");
}
int main(void) {
stdio_init_all();
init_i2c_and_lcd();
write_lcd_greeting();
while (true) {
printf("FAV_NUM: %d\r\n", FAV_NUM);
printf("OTHER_FAV_NUM: %d\r\n", OTHER_FAV_NUM);
0x0017_constants/lcd_1602.c
+59 -13
View File
@@ -31,21 +31,37 @@
#include <string.h>
#include <stdint.h>
/** @brief I2C instance pointer for the LCD */
static i2c_inst_t *lcd_i2c = NULL;
/** @brief I2C address of the PCF8574 backpack */
static uint8_t lcd_addr = 0x27;
/** @brief Bit shift for 4-bit nibble position */
static int lcd_nibble_shift = 4;
/** @brief PCF8574 bit mask controlling the backlight */
static uint8_t lcd_backlight_mask = 0x08;
/* PCF8574 -> LCD control pins */
/** @brief PCF8574 bit mask for Register Select */
#define PIN_RS 0x01
/** @brief PCF8574 bit mask for Read/Write */
#define PIN_RW 0x02
/** @brief PCF8574 bit mask for Enable */
#define PIN_EN 0x04
/**
* @brief Write one raw byte to the PCF8574 expander over I2C
*
* @param data Output byte to send to the expander
*/
static void pcf_write_byte(uint8_t data) {
if (!lcd_i2c) return;
i2c_write_blocking(lcd_i2c, lcd_addr, &data, 1, false);
}
/**
* @brief Toggle EN to latch a nibble into the LCD controller
*
* @param data Current control/data bus byte (with RS and backlight already set)
*/
static void pcf_pulse_enable(uint8_t data) {
pcf_write_byte(data | PIN_EN);
sleep_us(1);
@@ -53,6 +69,12 @@ static void pcf_pulse_enable(uint8_t data) {
sleep_us(50);
}
/**
* @brief Write one 4-bit nibble to the LCD
*
* @param nibble Lower 4 bits to write
* @param mode 0 for command, non-zero for character data
*/
static void lcd_write4(uint8_t nibble, uint8_t mode) {
uint8_t data = (nibble & 0x0F) << lcd_nibble_shift;
data |= mode ? PIN_RS : 0;
@@ -60,18 +82,37 @@ static void lcd_write4(uint8_t nibble, uint8_t mode) {
pcf_pulse_enable(data);
}
/**
* @brief Send one full 8-bit command/data value as two nibbles
*
* @param value Byte to send to the LCD
* @param mode 0 for command, non-zero for character data
*/
static void lcd_send(uint8_t value, uint8_t mode) {
lcd_write4((value >> 4) & 0x0F, mode);
lcd_write4(value & 0x0F, mode);
}
void lcd_i2c_init(i2c_inst_t *i2c, uint8_t pcf_addr, int nibble_shift, uint8_t backlight_mask) {
/**
* @brief Store LCD driver configuration in module-level state
*
* @param i2c Pointer to the I2C instance
* @param pcf_addr 7-bit PCF8574 address
* @param nibble_shift Bit shift for 4-bit nibbles
* @param backlight_mask Backlight control bit mask
*/
static void lcd_store_config(i2c_inst_t *i2c, uint8_t pcf_addr,
int nibble_shift, uint8_t backlight_mask) {
lcd_i2c = i2c;
lcd_addr = pcf_addr;
lcd_nibble_shift = nibble_shift;
lcd_backlight_mask = backlight_mask;
}
// Follow init sequence for HD44780 in 4-bit mode
/**
* @brief Execute the HD44780 4-bit mode power-on reset sequence
*/
static void lcd_hd44780_reset(void) {
lcd_write4(0x03, 0);
sleep_ms(5);
lcd_write4(0x03, 0);
@@ -80,21 +121,28 @@ void lcd_i2c_init(i2c_inst_t *i2c, uint8_t pcf_addr, int nibble_shift, uint8_t b
sleep_us(150);
lcd_write4(0x02, 0);
sleep_us(150);
}
// Function set: 4-bit, 2 lines
/**
* @brief Send post-reset configuration commands to the HD44780
*
* Sets 4-bit mode with 2 display lines, turns the display on with
* cursor hidden, clears the screen, and selects left-to-right entry mode.
*/
static void lcd_hd44780_configure(void) {
lcd_send(0x28, 0);
// Display on, cursor off
lcd_send(0x0C, 0);
// Clear
lcd_send(0x01, 0);
sleep_ms(2);
// Entry mode set
lcd_send(0x06, 0);
}
void lcd_i2c_init(i2c_inst_t *i2c, uint8_t pcf_addr, int nibble_shift, uint8_t backlight_mask) {
lcd_store_config(i2c, pcf_addr, nibble_shift, backlight_mask);
lcd_hd44780_reset();
lcd_hd44780_configure();
}
void lcd_clear(void) {
lcd_send(0x01, 0);
sleep_ms(2);
@@ -102,13 +150,11 @@ void lcd_clear(void) {
void lcd_set_cursor(int line, int position) {
const uint8_t row_offsets[] = {0x00, 0x40};
if (line > 1) line = 1;
lcd_send(0x80 | (position + row_offsets[line]), 0);
}
void lcd_puts(const char *s) {
while (*s) {
while (*s)
lcd_send((uint8_t)*s++, 1);
}
}
0x001a_operators/0x001a_operators.c
+115 -25
View File
@@ -1,36 +1,126 @@
/**
* @file 0x001a_operators.c
* @brief Operators: demonstrate C operators with DHT11 temperature sensor
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates arithmetic, increment, relational, logical, bitwise, and
* assignment operators in C. Also reads humidity and temperature from a
* DHT11 sensor on GPIO4.
*
* Wiring:
* GPIO4 -> DHT11 data pin (with 10k pull-up to 3V3)
* 3V3 -> DHT11 VCC
* GND -> DHT11 GND
*/
#include <stdio.h>
#include "pico/stdlib.h"
#include "dht11.h"
/**
* @brief Print pre-computed operator results
*
* @details Prints all six operator demonstration values over UART.
*
* @param arith arithmetic operator result
* @param inc increment operator result
* @param rel relational operator result
* @param logic logical operator result
* @param bitw bitwise operator result
* @param assign assignment operator result
* @retval None
*/
static void print_operator_results(int arith, int inc, bool rel,
bool logic, int bitw, int assign) {
printf("arithmetic_operator: %d\r\n", arith);
printf("increment_operator: %d\r\n", inc);
printf("relational_operator: %d\r\n", rel);
printf("logical_operator: %d\r\n", logic);
printf("bitwise_operator: %d\r\n", bitw);
printf("assignment_operator: %d\r\n", assign);
}
/**
* @brief Compute arithmetic and increment operator results
*
* @param arith pointer to store multiplication result
* @param incr pointer to store post-increment result
* @param x left operand
* @param y right operand
* @retval None
*/
static void compute_arithmetic_ops(int *arith, int *incr, int x, int y) {
*arith = (x * y);
*incr = x++;
}
/**
* @brief Compute all operator values and print results
*
* @details Performs arithmetic, relational, logical, bitwise,
* and assignment operations, then prints each result.
*
* @retval None
*/
static void compute_operators(void) {
int x = 5, y = 10;
int arith, incr;
compute_arithmetic_ops(&arith, &incr, x, y);
bool rel = (x > y);
bool logic = (x > y) && (y > x);
int bits = (x << 1);
int assign = (x += 5);
print_operator_results(arith, incr, rel, logic, bits, assign);
}
/**
* @brief Read and print DHT11 humidity and temperature
*
* @details Attempts a DHT11 read; on success prints humidity and
* temperature, on failure prints an error message.
*
* @retval None
*/
static void print_dht11_reading(void) {
float hum, temp;
if (dht11_read(&hum, &temp)) {
printf("Humidity: %.1f%%, Temperature: %.1f°C\r\n", hum, temp);
} else {
printf("DHT11 read failed\r\n");
}
}
int main(void) {
stdio_init_all();
dht11_init(4);
int x = 5;
int y = 10;
int arithmetic_operator = (x * y);
int increment_operator = x++;
bool relational_operator = (x > y);
bool logical_operator = (x > y) && (y > x);
int bitwise_operator = (x<<1); // x is now 6 because of x++ or 0b00000110 and (x<<1) is 0b00001100 or 12
int assignment_operator = (x += 5);
while (true) {
printf("arithmetic_operator: %d\r\n", arithmetic_operator);
printf("increment_operator: %d\r\n", increment_operator);
printf("relational_operator: %d\r\n", relational_operator);
printf("logical_operator: %d\r\n", logical_operator);
printf("bitwise_operator: %d\r\n", bitwise_operator);
printf("assignment_operator: %d\r\n", assignment_operator);
float hum, temp;
if (dht11_read(&hum, &temp)) {
printf("Humidity: %.1f%%, Temperature: %.1f°C\r\n", hum, temp);
} else {
printf("DHT11 read failed\r\n");
}
compute_operators();
print_dht11_reading();
sleep_ms(2000);
}
}
0x001a_operators/dht11.c
+93 -32
View File
@@ -31,8 +31,97 @@
#include "hardware/gpio.h"
#include "pico/time.h"
/** @brief GPIO pin connected to the DHT11 sensor */
static uint dht_pin;
/**
* @brief Send the DHT11 start signal on the data pin
*
* Drives the pin LOW for 18 ms then HIGH for 40 us before switching
* the pin to input mode to listen for the sensor response.
*/
static void send_start_signal(void) {
gpio_set_dir(dht_pin, GPIO_OUT);
gpio_put(dht_pin, 0);
sleep_ms(18);
gpio_put(dht_pin, 1);
sleep_us(40);
gpio_set_dir(dht_pin, GPIO_IN);
}
/**
* @brief Wait for the pin to leave a given logic level
*
* Spins until the pin no longer reads the specified level, returning
* false if a timeout of 10 000 iterations is exceeded.
*
* @param level Logic level to wait through (0 or 1)
* @return bool true once the level changed, false on timeout
*/
static bool wait_for_level(int level) {
uint32_t timeout = 10000;
while (gpio_get(dht_pin) == level)
if (--timeout == 0) return false;
return true;
}
/**
* @brief Wait for the DHT11 response after the start signal
*
* The sensor pulls LOW then HIGH then LOW again; each transition
* is awaited with a timeout.
*
* @return bool true if the full response was received, false on timeout
*/
static bool wait_response(void) {
if (!wait_for_level(1)) return false;
if (!wait_for_level(0)) return false;
if (!wait_for_level(1)) return false;
return true;
}
/**
* @brief Read a single bit from the DHT11 data stream
*
* Waits for the low-period to end, measures the high-period duration,
* and shifts the result into the appropriate byte of the data array.
*
* @param data 5-byte array accumulating the received bits
* @param i Bit index (0-39)
* @return bool true on success, false on timeout
*/
static bool read_bit(uint8_t *data, int i) {
if (!wait_for_level(0)) return false;
uint32_t start = time_us_32();
if (!wait_for_level(1)) return false;
uint32_t duration = time_us_32() - start;
data[i / 8] <<= 1;
if (duration > 40) data[i / 8] |= 1;
return true;
}
/**
* @brief Read all 40 data bits from the DHT11
*
* @param data 5-byte array filled with the received data
* @return bool true if all 40 bits were read, false on timeout
*/
static bool read_40_bits(uint8_t *data) {
for (int i = 0; i < 40; i++)
if (!read_bit(data, i)) return false;
return true;
}
/**
* @brief Verify the DHT11 checksum byte
*
* @param data 5-byte received data (bytes 0-3 plus checksum in byte 4)
* @return bool true if the checksum matches, false otherwise
*/
static bool validate_checksum(const uint8_t *data) {
return data[4] == ((data[0] + data[1] + data[2] + data[3]) & 0xFF);
}
void dht11_init(uint8_t pin) {
dht_pin = pin;
gpio_init(pin);
@@ -41,38 +130,10 @@ void dht11_init(uint8_t pin) {
bool dht11_read(float *humidity, float *temperature) {
uint8_t data[5] = {0};
// Start signal
gpio_set_dir(dht_pin, GPIO_OUT);
gpio_put(dht_pin, 0);
sleep_ms(18);
gpio_put(dht_pin, 1);
sleep_us(40);
gpio_set_dir(dht_pin, GPIO_IN);
// Wait for response
uint32_t timeout = 10000;
while (gpio_get(dht_pin) == 1) if (--timeout == 0) return false;
timeout = 10000;
while (gpio_get(dht_pin) == 0) if (--timeout == 0) return false;
timeout = 10000;
while (gpio_get(dht_pin) == 1) if (--timeout == 0) return false;
// Read 40 bits
for (int i = 0; i < 40; i++) {
timeout = 10000;
while (gpio_get(dht_pin) == 0) if (--timeout == 0) return false;
uint32_t start = time_us_32();
timeout = 10000;
while (gpio_get(dht_pin) == 1) if (--timeout == 0) return false;
uint32_t duration = time_us_32() - start;
data[i / 8] <<= 1;
if (duration > 40) data[i / 8] |= 1;
}
// Check checksum
if (data[4] != ((data[0] + data[1] + data[2] + data[3]) & 0xFF)) return false;
send_start_signal();
if (!wait_response()) return false;
if (!read_40_bits(data)) return false;
if (!validate_checksum(data)) return false;
*humidity = data[0] + data[1] * 0.1f;
*temperature = data[2] + data[3] * 0.1f;
return true;
0x001d_static-conditionals/0x001d_static-conditionals.c
+93 -26
View File
@@ -1,39 +1,106 @@
/**
* @file 0x001d_static-conditionals.c
* @brief Static conditionals: if/else and switch with servo sweep
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates static (compile-time known) conditionals using if/else if/else
* and switch/case statements. Also sweeps a servo on GPIO6 between 0 and
* 180 degrees each iteration.
*
* Wiring:
* GPIO6 -> Servo signal wire (orange/white)
* 5V -> Servo VCC (red)
* GND -> Servo GND (brown/black)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#include "servo.h"
/** @brief GPIO pin number for the servo */
#define SERVO_GPIO 6
/**
* @brief Print choice value using if/else if/else conditional
*
* @details Prints "1", "2", or "?" depending on the choice value.
*
* @param choice integer value to evaluate
* @retval None
*/
static void print_if_else(int choice) {
if (choice == 1) {
printf("1\r\n");
} else if (choice == 2) {
printf("2\r\n");
} else {
printf("?\r\n");
}
}
/**
* @brief Print choice value using switch/case conditional
*
* @details Prints "one", "two", or "??" depending on the choice value.
*
* @param choice integer value to evaluate
* @retval None
*/
static void print_switch(int choice) {
switch (choice) {
case 1: printf("one\r\n"); break;
case 2: printf("two\r\n"); break;
default: printf("??\r\n");
}
}
/**
* @brief Sweep servo between 0 and 180 degrees
*
* @details Sets the servo to 0 degrees, waits 500ms, then sets
* to 180 degrees and waits 500ms.
*
* @retval None
*/
static void sweep_servo(void) {
servo_set_angle(0.0f);
sleep_ms(500);
servo_set_angle(180.0f);
sleep_ms(500);
}
int main(void) {
stdio_init_all();
int choice = 1;
servo_init(SERVO_GPIO);
while (true) {
if (choice == 1) {
printf("1\r\n");
} else if (choice == 2) {
printf("2\r\n");
} else {
printf("?\r\n");
}
switch (choice) {
case 1:
printf("one\r\n");
break;
case 2:
printf("two\r\n");
break;
default:
printf("??\r\n");
}
servo_set_angle(0.0f);
sleep_ms(500);
servo_set_angle(180.0f);
sleep_ms(500);
print_if_else(choice);
print_switch(choice);
sweep_servo();
}
}
0x001d_static-conditionals/servo.c
+39 -21
View File
@@ -32,46 +32,66 @@
#include "hardware/pwm.h"
#include "hardware/clocks.h"
// Default servo pulse range (SG90 typical)
/** @brief Default minimum pulse width in microseconds */
static const uint16_t SERVO_DEFAULT_MIN_US = 1000;
/** @brief Default maximum pulse width in microseconds */
static const uint16_t SERVO_DEFAULT_MAX_US = 2000;
// internal state
/** @brief GPIO pin assigned to the servo */
static uint8_t servo_pin = 0;
/** @brief PWM hardware slice for the servo pin */
static uint servo_slice = 0;
/** @brief PWM channel within the servo slice */
static uint servo_chan = 0;
static uint32_t servo_wrap = 20000 - 1; // wrap to map microseconds for 50Hz
/** @brief PWM counter wrap value for 50 Hz servo */
static uint32_t servo_wrap = 20000 - 1;
/** @brief Servo PWM frequency in Hz */
static float servo_hz = 50.0f;
/** @brief Flag indicating servo has been initialized */
static bool servo_initialized = false;
// Convert microsecond pulse to PWM level based on wrap and frequency
/**
* @brief Convert a pulse width in microseconds to a PWM counter level
*
* Uses the configured PWM wrap and servo frequency to map pulse time
* into the channel compare value expected by the PWM hardware.
*
* @param pulse_us Pulse width in microseconds
* @return uint32_t PWM level suitable for pwm_set_chan_level()
*/
static uint32_t pulse_us_to_level(uint32_t pulse_us) {
const float period_us = 1000000.0f / servo_hz; // 20000us
const float period_us = 1000000.0f / servo_hz;
float counts_per_us = (servo_wrap + 1) / period_us;
return (uint32_t)(pulse_us * counts_per_us + 0.5f);
}
void servo_init(uint8_t pin) {
servo_pin = pin;
// Configure GPIO for PWM
gpio_set_function(servo_pin, GPIO_FUNC_PWM);
servo_slice = pwm_gpio_to_slice_num(servo_pin);
servo_chan = pwm_gpio_to_channel(servo_pin);
/**
* @brief Build and apply the PWM slice configuration for 50 Hz servo
*
* Computes the clock divider from the system clock to achieve the
* target servo frequency with the chosen wrap value, then starts
* the PWM slice.
*/
static void apply_servo_config(void) {
pwm_config config = pwm_get_default_config();
// Calculate clock divider to achieve 50 Hz with our chosen wrap
const uint32_t sys_clock_hz = clock_get_hz(clk_sys);
float clock_div = (float)sys_clock_hz / (servo_hz * (servo_wrap + 1));
pwm_config_set_clkdiv(&config, clock_div);
pwm_config_set_wrap(&config, servo_wrap);
pwm_init(servo_slice, &config, true);
}
void servo_init(uint8_t pin) {
servo_pin = pin;
gpio_set_function(servo_pin, GPIO_FUNC_PWM);
servo_slice = pwm_gpio_to_slice_num(servo_pin);
servo_chan = pwm_gpio_to_channel(servo_pin);
apply_servo_config();
servo_initialized = true;
}
void servo_set_pulse_us(uint16_t pulse_us) {
if (servo_pin == 0) return; // not initialized
// clamp to defaults
if (!servo_initialized) return;
if (pulse_us < SERVO_DEFAULT_MIN_US) pulse_us = SERVO_DEFAULT_MIN_US;
if (pulse_us > SERVO_DEFAULT_MAX_US) pulse_us = SERVO_DEFAULT_MAX_US;
uint32_t level = pulse_us_to_level(pulse_us);
@@ -81,9 +101,7 @@ void servo_set_pulse_us(uint16_t pulse_us) {
void servo_set_angle(float degrees) {
if (degrees < 0.0f) degrees = 0.0f;
if (degrees > 180.0f) degrees = 180.0f;
// linear map 0..180 -> min_us..max_us
float ratio = degrees / 180.0f;
uint16_t pulse = (uint16_t)(SERVO_DEFAULT_MIN_US + ratio * (SERVO_DEFAULT_MAX_US - SERVO_DEFAULT_MIN_US) + 0.5f);
servo_set_pulse_us(pulse);
}
#
}
0x0020_dynamic-conditionals/0x0020_dynamic-conditionals.c
+97 -30
View File
@@ -1,44 +1,111 @@
/**
* @file 0x0020_dynamic-conditionals.c
* @brief Dynamic conditionals: UART input drives if/else and switch with servo
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates dynamic (runtime) conditionals using UART input via getchar().
* Reads a character, evaluates it with if/else and switch/case, and controls
* a servo on GPIO6 based on the input ('1' or '2').
*
* Wiring:
* GPIO6 -> Servo signal wire (orange/white)
* 5V -> Servo VCC (red)
* GND -> Servo GND (brown/black)
*/
#include <stdio.h>
#include "pico/stdlib.h"
#include "servo.h"
/** @brief GPIO pin number for the servo */
#define SERVO_GPIO 6
/**
* @brief Evaluate choice with if/else conditional and print result
*
* @details Compares against hex ASCII values 0x31 ('1') and 0x32 ('2').
*
* @param choice character value received from UART
* @retval None
*/
static void eval_if_else(uint8_t choice) {
if (choice == 0x31) {
printf("1\r\n");
} else if (choice == 0x32) {
printf("2\r\n");
} else {
printf("??\r\n");
}
}
/**
* @brief Sweep servo from start angle to end angle with a pause
*
* @details Sets the servo to start, waits 500 ms, sets to end,
* waits 500 ms.
*
* @param label text to print before sweeping
* @param start starting angle in degrees
* @param end ending angle in degrees
* @retval None
*/
static void sweep_servo(const char *label, float start, float end) {
printf("%s\r\n", label);
servo_set_angle(start);
sleep_ms(500);
servo_set_angle(end);
sleep_ms(500);
}
/**
* @brief Process choice with switch/case and drive servo accordingly
*
* @details On '1', sweeps servo 0->180; on '2', sweeps 180->0;
* otherwise prints unknown.
*
* @param choice character value received from UART
* @retval None
*/
static void process_servo_command(uint8_t choice) {
switch (choice) {
case '1': sweep_servo("one", 0.0f, 180.0f); break;
case '2': sweep_servo("two", 180.0f, 0.0f); break;
default: printf("??\r\n");
}
}
int main(void) {
stdio_init_all();
uint8_t choice = 0;
servo_init(SERVO_GPIO);
while (true) {
choice = getchar();
if (choice == 0x31) {
printf("1\r\n");
} else if (choice == 0x32) {
printf("2\r\n");
} else {
printf("??\r\n");
}
switch (choice) {
case '1':
printf("one\r\n");
servo_set_angle(0.0f);
sleep_ms(500);
servo_set_angle(180.0f);
sleep_ms(500);
break;
case '2':
printf("two\r\n");
servo_set_angle(180.0f);
sleep_ms(500);
servo_set_angle(0.0f);
sleep_ms(500);
break;
default:
printf("??\r\n");
}
eval_if_else(choice);
process_servo_command(choice);
}
}
0x0020_dynamic-conditionals/servo.c
+39 -21
View File
@@ -32,46 +32,66 @@
#include "hardware/pwm.h"
#include "hardware/clocks.h"
// Default servo pulse range (SG90 typical)
/** @brief Default minimum pulse width in microseconds */
static const uint16_t SERVO_DEFAULT_MIN_US = 1000;
/** @brief Default maximum pulse width in microseconds */
static const uint16_t SERVO_DEFAULT_MAX_US = 2000;
// internal state
/** @brief GPIO pin assigned to the servo */
static uint8_t servo_pin = 0;
/** @brief PWM hardware slice for the servo pin */
static uint servo_slice = 0;
/** @brief PWM channel within the servo slice */
static uint servo_chan = 0;
static uint32_t servo_wrap = 20000 - 1; // wrap to map microseconds for 50Hz
/** @brief PWM counter wrap value for 50 Hz servo */
static uint32_t servo_wrap = 20000 - 1;
/** @brief Servo PWM frequency in Hz */
static float servo_hz = 50.0f;
/** @brief Flag indicating servo has been initialized */
static bool servo_initialized = false;
// Convert microsecond pulse to PWM level based on wrap and frequency
/**
* @brief Convert a pulse width in microseconds to a PWM counter level
*
* Uses the configured PWM wrap and servo frequency to map pulse time
* into the channel compare value expected by the PWM hardware.
*
* @param pulse_us Pulse width in microseconds
* @return uint32_t PWM level suitable for pwm_set_chan_level()
*/
static uint32_t pulse_us_to_level(uint32_t pulse_us) {
const float period_us = 1000000.0f / servo_hz; // 20000us
const float period_us = 1000000.0f / servo_hz;
float counts_per_us = (servo_wrap + 1) / period_us;
return (uint32_t)(pulse_us * counts_per_us + 0.5f);
}
void servo_init(uint8_t pin) {
servo_pin = pin;
// Configure GPIO for PWM
gpio_set_function(servo_pin, GPIO_FUNC_PWM);
servo_slice = pwm_gpio_to_slice_num(servo_pin);
servo_chan = pwm_gpio_to_channel(servo_pin);
/**
* @brief Build and apply the PWM slice configuration for 50 Hz servo
*
* Computes the clock divider from the system clock to achieve the
* target servo frequency with the chosen wrap value, then starts
* the PWM slice.
*/
static void apply_servo_config(void) {
pwm_config config = pwm_get_default_config();
// Calculate clock divider to achieve 50 Hz with our chosen wrap
const uint32_t sys_clock_hz = clock_get_hz(clk_sys);
float clock_div = (float)sys_clock_hz / (servo_hz * (servo_wrap + 1));
pwm_config_set_clkdiv(&config, clock_div);
pwm_config_set_wrap(&config, servo_wrap);
pwm_init(servo_slice, &config, true);
}
void servo_init(uint8_t pin) {
servo_pin = pin;
gpio_set_function(servo_pin, GPIO_FUNC_PWM);
servo_slice = pwm_gpio_to_slice_num(servo_pin);
servo_chan = pwm_gpio_to_channel(servo_pin);
apply_servo_config();
servo_initialized = true;
}
void servo_set_pulse_us(uint16_t pulse_us) {
if (servo_pin == 0) return; // not initialized
// clamp to defaults
if (!servo_initialized) return;
if (pulse_us < SERVO_DEFAULT_MIN_US) pulse_us = SERVO_DEFAULT_MIN_US;
if (pulse_us > SERVO_DEFAULT_MAX_US) pulse_us = SERVO_DEFAULT_MAX_US;
uint32_t level = pulse_us_to_level(pulse_us);
@@ -81,9 +101,7 @@ void servo_set_pulse_us(uint16_t pulse_us) {
void servo_set_angle(float degrees) {
if (degrees < 0.0f) degrees = 0.0f;
if (degrees > 180.0f) degrees = 180.0f;
// linear map 0..180 -> min_us..max_us
float ratio = degrees / 180.0f;
uint16_t pulse = (uint16_t)(SERVO_DEFAULT_MIN_US + ratio * (SERVO_DEFAULT_MAX_US - SERVO_DEFAULT_MIN_US) + 0.5f);
servo_set_pulse_us(pulse);
}
#
}
0x0023_structures/0x0023_structures.c
+120 -41
View File
@@ -1,8 +1,50 @@
/**
* @file 0x0023_structures.c
* @brief Structures: IR remote controls LEDs via a struct-based controller
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates C structures by defining a simple_led_ctrl_t to manage three
* LEDs. An IR receiver on GPIO5 decodes NEC commands and activates the
* corresponding LED (0x0C -> GPIO16, 0x18 -> GPIO17, 0x5E -> GPIO18).
*
* Wiring:
* GPIO5 -> IR receiver OUT
* GPIO16 -> LED1 anode (with current-limiting resistor to GND)
* GPIO17 -> LED2 anode (with current-limiting resistor to GND)
* GPIO18 -> LED3 anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include <stdbool.h>
#include "pico/stdlib.h"
#include "ir.h"
/** @brief GPIO pin number for the IR receiver */
#define IR_PIN 5
typedef struct {
@@ -14,48 +56,85 @@ typedef struct {
bool led3_state;
} simple_led_ctrl_t;
int main(void) {
stdio_init_all();
/**
* @brief Initialize all three LED GPIO pins as outputs
*
* @details Configures led1_pin, led2_pin, and led3_pin from the
* structure as GPIO outputs.
*
* @param leds pointer to the LED controller structure
* @retval None
*/
static void init_led_gpios(simple_led_ctrl_t *leds) {
gpio_init(leds->led1_pin);
gpio_set_dir(leds->led1_pin, GPIO_OUT);
gpio_init(leds->led2_pin);
gpio_set_dir(leds->led2_pin, GPIO_OUT);
gpio_init(leds->led3_pin);
gpio_set_dir(leds->led3_pin, GPIO_OUT);
}
simple_led_ctrl_t leds = {
.led1_pin = 16,
.led2_pin = 17,
.led3_pin = 18,
.led1_state = false,
.led2_state = false,
.led3_state = false
};
/**
* @brief Process an NEC IR key and update LED states
*
* @details Maps NEC command codes to LEDs: 0x0C -> LED1, 0x18 -> LED2,
* 0x5E -> LED3. Turns off all LEDs first, then activates the match.
*
* @param leds pointer to the LED controller structure
* @param key NEC command code from IR receiver
* @retval None
*/
static void process_ir_key(simple_led_ctrl_t *leds, int key) {
printf("NEC command: 0x%02X\n", key);
leds->led1_state = (key == 0x0C);
leds->led2_state = (key == 0x18);
leds->led3_state = (key == 0x5E);
gpio_put(leds->led1_pin, leds->led1_state);
gpio_put(leds->led2_pin, leds->led2_state);
gpio_put(leds->led3_pin, leds->led3_state);
sleep_ms(10);
}
gpio_init(leds.led1_pin); gpio_set_dir(leds.led1_pin, GPIO_OUT);
gpio_init(leds.led2_pin); gpio_set_dir(leds.led2_pin, GPIO_OUT);
gpio_init(leds.led3_pin); gpio_set_dir(leds.led3_pin, GPIO_OUT);
ir_init(IR_PIN);
printf("IR receiver on GPIO %d ready\n", IR_PIN);
while (true) {
int key = ir_getkey();
if (key >= 0) {
printf("NEC command: 0x%02X\n", key);
// turn all off first
leds.led1_state = false;
leds.led2_state = false;
leds.led3_state = false;
// check NEC codes
if (key == 0x0C) leds.led1_state = true; // GPIO16
if (key == 0x18) leds.led2_state = true; // GPIO17
if (key == 0x5E) leds.led3_state = true; // GPIO18
// apply states
gpio_put(leds.led1_pin, leds.led1_state);
gpio_put(leds.led2_pin, leds.led2_state);
gpio_put(leds.led3_pin, leds.led3_state);
sleep_ms(10);
} else {
sleep_ms(1);
}
/**
* @brief Poll IR receiver and dispatch key to handler
*
* @details Reads one IR key; if valid, processes it; otherwise
* yields with a short sleep.
*
* @param leds pointer to the LED controller structure
* @retval None
*/
static void poll_ir(simple_led_ctrl_t *leds) {
int key = ir_getkey();
if (key >= 0) {
process_ir_key(leds, key);
} else {
sleep_ms(1);
}
}
/**
* @brief Build the default LED controller structure
*
* @details Initializes pins 16-18 with all LEDs off.
*
* @return simple_led_ctrl_t initialized structure
*/
static simple_led_ctrl_t make_default_leds(void) {
simple_led_ctrl_t leds = {
.led1_pin = 16, .led2_pin = 17, .led3_pin = 18,
.led1_state = false, .led2_state = false, .led3_state = false
};
return leds;
}
int main(void) {
stdio_init_all();
simple_led_ctrl_t leds = make_default_leds();
init_led_gpios(&leds);
ir_init(IR_PIN);
printf("IR receiver on GPIO %d ready\n", IR_PIN);
while (true) {
poll_ir(&leds);
}
}
0x0023_structures/ir.c
+76 -26
View File
@@ -32,19 +32,89 @@
#include "pico/time.h"
#include "hardware/gpio.h"
/** @brief GPIO pin connected to the IR receiver */
static unsigned int ir_pin = 0;
// Wait for 'gpio' to reach 'level' or timeout (microseconds). Return elapsed us or -1.
/**
* @brief Wait for a GPIO pin to reach a given logic level
*
* Spins until the pin matches the requested level or a microsecond timeout
* is exceeded. Returns the elapsed time in microseconds, or -1 on timeout.
*
* @param gpio GPIO pin to monitor
* @param level Desired logic level (true = HIGH, false = LOW)
* @param timeout_us Maximum wait in microseconds
* @return int64_t Elapsed microseconds, or -1 on timeout
*/
static int64_t wait_for_level(unsigned int gpio, bool level, uint32_t timeout_us) {
absolute_time_t start = get_absolute_time();
while (gpio_get(gpio) != level) {
if (absolute_time_diff_us(start, get_absolute_time()) > (int64_t)timeout_us) {
if (absolute_time_diff_us(start, get_absolute_time()) > (int64_t)timeout_us)
return -1;
}
}
return absolute_time_diff_us(start, get_absolute_time());
}
/**
* @brief Wait for the NEC 9 ms leader pulse and 4.5 ms space
*
* @return bool true if a valid leader was detected, false on timeout
*/
static bool wait_leader(void) {
if (wait_for_level(ir_pin, 0, 150000) < 0) return false;
int64_t t = wait_for_level(ir_pin, 1, 12000);
if (t < 8000 || t > 10000) return false;
t = wait_for_level(ir_pin, 0, 7000);
if (t < 3500 || t > 5000) return false;
return true;
}
/**
* @brief Read a single NEC-encoded bit from the IR receiver
*
* Measures the mark/space timing and shifts the result into the
* appropriate byte of the data array.
*
* @param data 4-byte array accumulating received bits
* @param i Bit index (0-31)
* @return bool true on success, false on timeout or protocol error
*/
static bool read_nec_bit(uint8_t *data, int i) {
if (wait_for_level(ir_pin, 1, 1000) < 0) return false;
int64_t t = wait_for_level(ir_pin, 0, 2500);
if (t < 200) return false;
int byte_idx = i / 8;
int bit_idx = i % 8;
if (t > 1200) data[byte_idx] |= (1 << bit_idx);
return true;
}
/**
* @brief Read all 32 data bits of an NEC frame
*
* @param data 4-byte array filled with the received address and command
* @return bool true if all 32 bits were read, false on timeout
*/
static bool read_32_bits(uint8_t *data) {
for (int i = 0; i < 32; ++i)
if (!read_nec_bit(data, i)) return false;
return true;
}
/**
* @brief Validate an NEC frame and extract the command byte
*
* Checks that the address and command pairs are bitwise-inverted.
*
* @param data 4-byte NEC frame (addr, ~addr, cmd, ~cmd)
* @return int Command byte (0-255) on success, -1 on validation failure
*/
static int validate_nec_frame(const uint8_t *data) {
if ((uint8_t)(data[0] + data[1]) == 0xFF && (uint8_t)(data[2] + data[3]) == 0xFF)
return data[2];
return -1;
}
void ir_init(uint8_t pin) {
ir_pin = pin;
gpio_init(pin);
@@ -53,28 +123,8 @@ void ir_init(uint8_t pin) {
}
int ir_getkey(void) {
// leader low (~9 ms)
if (wait_for_level(ir_pin, 0, 150000) < 0) return -1;
int64_t t = wait_for_level(ir_pin, 1, 12000);
if (t < 8000 || t > 10000) return -1;
t = wait_for_level(ir_pin, 0, 7000);
if (t < 3500 || t > 5000) return -1;
if (!wait_leader()) return -1;
uint8_t data[4] = {0, 0, 0, 0};
for (int i = 0; i < 32; ++i) {
if (wait_for_level(ir_pin, 1, 1000) < 0) return -1;
t = wait_for_level(ir_pin, 0, 2500);
if (t < 200) return -1;
int byte_idx = i / 8;
int bit_idx = i % 8;
if (t > 1200) data[byte_idx] |= (1 << bit_idx); // logical '1'
}
// Validate address/data inverted pairs
if ((uint8_t)(data[0] + data[1]) == 0xFF && (uint8_t)(data[2] + data[3]) == 0xFF) {
return data[2];
}
return -1;
if (!read_32_bits(data)) return -1;
return validate_nec_frame(data);
}
0x0026_functions/0x0026_functions.c
+155 -67
View File
@@ -1,8 +1,50 @@
/**
* @file 0x0026_functions.c
* @brief Functions: IR remote controls LEDs with helper function decomposition
* @author Kevin Thomas
* @date 2025
*
* MIT License
*
* Copyright (c) 2025 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* -----------------------------------------------------------------------------
*
* Demonstrates function decomposition by breaking IR-controlled LED logic
* into small, focused helper functions. An IR receiver on GPIO5 decodes
* NEC commands and activates the corresponding LED with a blink effect.
*
* Wiring:
* GPIO5 -> IR receiver OUT
* GPIO16 -> LED1 anode (with current-limiting resistor to GND)
* GPIO17 -> LED2 anode (with current-limiting resistor to GND)
* GPIO18 -> LED3 anode (with current-limiting resistor to GND)
*/
#include <stdio.h>
#include <stdbool.h>
#include "pico/stdlib.h"
#include "ir.h"
/** @brief GPIO pin number for the IR receiver */
#define IR_PIN 5
typedef struct {
@@ -17,13 +59,13 @@ typedef struct {
/**
* @brief Map NEC IR command code to LED number
*
* Translates a received NEC IR command code to a logical LED number.
* Supports three button mappings for controlling individual LEDs.
* @details Translates a received NEC IR command code to a logical
* LED number. Supports three button mappings.
*
* @param ir_command NEC command code from IR receiver
* @return int LED number (1-3) or 0 if no match
* @retval 1-3 for matched LED, 0 if no match
*/
int ir_to_led_number(int ir_command) {
static int ir_to_led_number(int ir_command) {
if (ir_command == 0x0C) return 1;
if (ir_command == 0x18) return 2;
if (ir_command == 0x5E) return 3;
@@ -33,14 +75,14 @@ int ir_to_led_number(int ir_command) {
/**
* @brief Get GPIO pin number for a given LED number
*
* Retrieves the GPIO pin associated with a logical LED number
* from the LED controller structure.
* @details Retrieves the GPIO pin associated with a logical LED
* number from the LED controller structure.
*
* @param leds Pointer to LED controller structure
* @param leds pointer to LED controller structure
* @param led_num LED number (1-3)
* @return uint8_t GPIO pin number or 0 if invalid
* @retval GPIO pin number or 0 if invalid
*/
uint8_t get_led_pin(simple_led_ctrl_t *leds, int led_num) {
static uint8_t get_led_pin(simple_led_ctrl_t *leds, int led_num) {
if (led_num == 1) return leds->led1_pin;
if (led_num == 2) return leds->led2_pin;
if (led_num == 3) return leds->led3_pin;
@@ -50,11 +92,12 @@ uint8_t get_led_pin(simple_led_ctrl_t *leds, int led_num) {
/**
* @brief Turn off all LEDs in the controller
*
* Sets all three LED GPIO outputs to low, turning off all LEDs.
* @details Sets all three LED GPIO outputs to low.
*
* @param leds Pointer to LED controller structure
* @param leds pointer to LED controller structure
* @retval None
*/
void leds_all_off(simple_led_ctrl_t *leds) {
static void leds_all_off(simple_led_ctrl_t *leds) {
gpio_put(leds->led1_pin, false);
gpio_put(leds->led2_pin, false);
gpio_put(leds->led3_pin, false);
@@ -63,14 +106,15 @@ void leds_all_off(simple_led_ctrl_t *leds) {
/**
* @brief Blink an LED pin a specified number of times
*
* Toggles the specified GPIO pin on and off for the given count,
* with configurable delay between transitions.
* @details Toggles the specified GPIO pin on and off for the given
* count, with configurable delay between transitions.
*
* @param pin GPIO pin number to blink
* @param count Number of blink cycles
* @param delay_ms Delay in milliseconds for on/off periods
* @param pin GPIO pin number to blink
* @param count number of blink cycles
* @param delay_ms delay in milliseconds for on/off periods
* @retval None
*/
void blink_led(uint8_t pin, uint8_t count, uint32_t delay_ms) {
static void blink_led(uint8_t pin, uint8_t count, uint32_t delay_ms) {
for (uint8_t i = 0; i < count; i++) {
gpio_put(pin, true);
sleep_ms(delay_ms);
@@ -82,15 +126,15 @@ void blink_led(uint8_t pin, uint8_t count, uint32_t delay_ms) {
/**
* @brief Process IR command and activate corresponding LED
*
* Handles incoming IR commands by turning off all LEDs, mapping the
* command to an LED, blinking it, then holding it steady.
* @details Turns off all LEDs, maps the command to an LED number,
* blinks it, then holds it steady.
*
* @param ir_command NEC command code from IR receiver
* @param leds Pointer to LED controller structure
* @param blink_count Number of blinks before steady state
* @return int LED number activated (1-3), 0 if none, -1 if invalid
* @param ir_command NEC command code from IR receiver
* @param leds pointer to LED controller structure
* @param blink_count number of blinks before steady state
* @retval LED number activated (1-3), 0 if none, -1 if invalid
*/
int process_ir_led_command(int ir_command, simple_led_ctrl_t *leds, uint8_t blink_count) {
static int process_ir_led_command(int ir_command, simple_led_ctrl_t *leds, uint8_t blink_count) {
if (!leds || ir_command < 0) return -1;
leds_all_off(leds);
int led_num = ir_to_led_number(ir_command);
@@ -101,49 +145,93 @@ int process_ir_led_command(int ir_command, simple_led_ctrl_t *leds, uint8_t blin
return led_num;
}
int main(void) {
stdio_init_all();
/**
* @brief Initialize all three LED GPIO pins as outputs
*
* @details Configures led1_pin, led2_pin, and led3_pin from the
* structure as GPIO outputs.
*
* @param leds pointer to the LED controller structure
* @retval None
*/
static void init_led_gpios(simple_led_ctrl_t *leds) {
gpio_init(leds->led1_pin);
gpio_set_dir(leds->led1_pin, GPIO_OUT);
gpio_init(leds->led2_pin);
gpio_set_dir(leds->led2_pin, GPIO_OUT);
gpio_init(leds->led3_pin);
gpio_set_dir(leds->led3_pin, GPIO_OUT);
}
simple_led_ctrl_t leds = {
.led1_pin = 16,
.led2_pin = 17,
.led3_pin = 18,
.led1_state = false,
.led2_state = false,
.led3_state = false
};
/**
* @brief Poll IR and handle a single received key
*
* @details Reads an IR key, processes the command with 3 blinks,
* and prints the result.
*
* @param leds pointer to the LED controller structure
* @retval None
*/
/**
* @brief Handle a valid IR key press
*
* @details Prints the NEC command, processes it with 3 blinks,
* and reports the activated LED.
*
* @param leds pointer to the LED controller structure
* @param key NEC command code
* @retval None
*/
static void handle_ir_key(simple_led_ctrl_t *leds, int key) {
printf("NEC command: 0x%02X\n", key);
int activated_led = process_ir_led_command(key, leds, 3);
if (activated_led > 0) {
printf("LED %d activated on GPIO %d\n", activated_led,
get_led_pin(leds, activated_led));
}
sleep_ms(10);
}
// Initialize LED GPIOs
gpio_init(leds.led1_pin); gpio_set_dir(leds.led1_pin, GPIO_OUT);
gpio_init(leds.led2_pin); gpio_set_dir(leds.led2_pin, GPIO_OUT);
gpio_init(leds.led3_pin); gpio_set_dir(leds.led3_pin, GPIO_OUT);
// Initialize IR receiver
ir_init(IR_PIN);
printf("IR receiver on GPIO %d ready\n", IR_PIN);
printf("Press remote buttons to control LEDs with blink effects!\n");
while (true) {
int key = ir_getkey();
if (key >= 0) {
printf("NEC command: 0x%02X\n", key);
// Process the IR command with 3 blinks before steady state
int activated_led = process_ir_led_command(key, &leds, 3);
if (activated_led > 0) {
printf("LED %d activated on GPIO %d\n", activated_led,
(activated_led == 1) ? leds.led1_pin :
(activated_led == 2) ? leds.led2_pin : leds.led3_pin);
} else if (activated_led == 0) {
printf("No LED matched or chase effect played\n");
} else {
printf("Invalid command or null pointer\n");
}
sleep_ms(10);
} else {
sleep_ms(1);
}
/**
* @brief Poll IR and handle a single received key
*
* @details Reads an IR key; if valid dispatches to handler,
* otherwise yields with a short sleep.
*
* @param leds pointer to the LED controller structure
* @retval None
*/
static void poll_and_handle_ir(simple_led_ctrl_t *leds) {
int key = ir_getkey();
if (key >= 0) {
handle_ir_key(leds, key);
} else {
sleep_ms(1);
}
}
/**
* @brief Build the default LED controller structure
*
* @details Initializes pins 16-18 with all LEDs off.
*
* @return simple_led_ctrl_t initialized structure
*/
static simple_led_ctrl_t make_default_leds(void) {
simple_led_ctrl_t leds = {
.led1_pin = 16, .led2_pin = 17, .led3_pin = 18,
.led1_state = false, .led2_state = false, .led3_state = false
};
return leds;
}
int main(void) {
stdio_init_all();
simple_led_ctrl_t leds = make_default_leds();
init_led_gpios(&leds);
ir_init(IR_PIN);
printf("IR receiver on GPIO %d ready\n", IR_PIN);
while (true) {
poll_and_handle_ir(&leds);
}
}
0x0026_functions/ir.c
+76 -26
View File
@@ -32,19 +32,89 @@
#include "pico/time.h"
#include "hardware/gpio.h"
/** @brief GPIO pin connected to the IR receiver */
static unsigned int ir_pin = 0;
// Wait for 'gpio' to reach 'level' or timeout (microseconds). Return elapsed us or -1.
/**
* @brief Wait for a GPIO pin to reach a given logic level
*
* Spins until the pin matches the requested level or a microsecond timeout
* is exceeded. Returns the elapsed time in microseconds, or -1 on timeout.
*
* @param gpio GPIO pin to monitor
* @param level Desired logic level (true = HIGH, false = LOW)
* @param timeout_us Maximum wait in microseconds
* @return int64_t Elapsed microseconds, or -1 on timeout
*/
static int64_t wait_for_level(unsigned int gpio, bool level, uint32_t timeout_us) {
absolute_time_t start = get_absolute_time();
while (gpio_get(gpio) != level) {
if (absolute_time_diff_us(start, get_absolute_time()) > (int64_t)timeout_us) {
if (absolute_time_diff_us(start, get_absolute_time()) > (int64_t)timeout_us)
return -1;
}
}
return absolute_time_diff_us(start, get_absolute_time());
}
/**
* @brief Wait for the NEC 9 ms leader pulse and 4.5 ms space
*
* @return bool true if a valid leader was detected, false on timeout
*/
static bool wait_leader(void) {
if (wait_for_level(ir_pin, 0, 150000) < 0) return false;
int64_t t = wait_for_level(ir_pin, 1, 12000);
if (t < 8000 || t > 10000) return false;
t = wait_for_level(ir_pin, 0, 7000);
if (t < 3500 || t > 5000) return false;
return true;
}
/**
* @brief Read a single NEC-encoded bit from the IR receiver
*
* Measures the mark/space timing and shifts the result into the
* appropriate byte of the data array.
*
* @param data 4-byte array accumulating received bits
* @param i Bit index (0-31)
* @return bool true on success, false on timeout or protocol error
*/
static bool read_nec_bit(uint8_t *data, int i) {
if (wait_for_level(ir_pin, 1, 1000) < 0) return false;
int64_t t = wait_for_level(ir_pin, 0, 2500);
if (t < 200) return false;
int byte_idx = i / 8;
int bit_idx = i % 8;
if (t > 1200) data[byte_idx] |= (1 << bit_idx);
return true;
}
/**
* @brief Read all 32 data bits of an NEC frame
*
* @param data 4-byte array filled with the received address and command
* @return bool true if all 32 bits were read, false on timeout
*/
static bool read_32_bits(uint8_t *data) {
for (int i = 0; i < 32; ++i)
if (!read_nec_bit(data, i)) return false;
return true;
}
/**
* @brief Validate an NEC frame and extract the command byte
*
* Checks that the address and command pairs are bitwise-inverted.
*
* @param data 4-byte NEC frame (addr, ~addr, cmd, ~cmd)
* @return int Command byte (0-255) on success, -1 on validation failure
*/
static int validate_nec_frame(const uint8_t *data) {
if ((uint8_t)(data[0] + data[1]) == 0xFF && (uint8_t)(data[2] + data[3]) == 0xFF)
return data[2];
return -1;
}
void ir_init(uint8_t pin) {
ir_pin = pin;
gpio_init(pin);
@@ -53,28 +123,8 @@ void ir_init(uint8_t pin) {
}
int ir_getkey(void) {
// leader low (~9 ms)
if (wait_for_level(ir_pin, 0, 150000) < 0) return -1;
int64_t t = wait_for_level(ir_pin, 1, 12000);
if (t < 8000 || t > 10000) return -1;
t = wait_for_level(ir_pin, 0, 7000);
if (t < 3500 || t > 5000) return -1;
if (!wait_leader()) return -1;
uint8_t data[4] = {0, 0, 0, 0};
for (int i = 0; i < 32; ++i) {
if (wait_for_level(ir_pin, 1, 1000) < 0) return -1;
t = wait_for_level(ir_pin, 0, 2500);
if (t < 200) return -1;
int byte_idx = i / 8;
int bit_idx = i % 8;
if (t > 1200) data[byte_idx] |= (1 << bit_idx); // logical '1'
}
// Validate address/data inverted pairs
if ((uint8_t)(data[0] + data[1]) == 0xFF && (uint8_t)(data[2] + data[3]) == 0xFF) {
return data[2];
}
return -1;
if (!read_32_bits(data)) return -1;
return validate_nec_frame(data);
}
drivers/0x01_uart_cbm/Inc/rp2350.h
+32 -23
View File
@@ -1,27 +1,36 @@
/**
******************************************************************************
* @file rp2350.h
* @author Kevin Thomas
* @brief RP2350 Device Peripheral Access Layer Header File.
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350.h
* @brief RP2350 Device Peripheral Access Layer Header File.
* @author Kevin Thomas
* @date 2026
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_H
#define __RP2350_H
drivers/0x01_uart_cbm/Inc/rp2350_reset.h
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_reset.h
* @author Kevin Thomas
* @brief Reset controller driver header for RP2350.
*
* Provides subsystem reset release for IO_BANK0.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.h
* @brief Reset controller driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Provides subsystem reset release for IO_BANK0.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_H
#define __RP2350_RESET_H
drivers/0x01_uart_cbm/Inc/rp2350_reset_handler.h
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.h
* @author Kevin Thomas
* @brief Reset handler header for RP2350.
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.h
* @brief Reset handler header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_HANDLER_H
#define __RP2350_RESET_HANDLER_H
drivers/0x01_uart_cbm/Inc/rp2350_stack.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_stack.h
* @author Kevin Thomas
* @brief Stack pointer initialization header for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.h
* @brief Stack pointer initialization header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_STACK_H
#define __RP2350_STACK_H
drivers/0x01_uart_cbm/Inc/rp2350_uart.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_uart.h
* @author Kevin Thomas
* @brief UART0 driver header for RP2350.
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.h
* @brief UART0 driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_UART_H
#define __RP2350_UART_H
drivers/0x01_uart_cbm/Inc/rp2350_xosc.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.h
* @author Kevin Thomas
* @brief XOSC driver header for RP2350.
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.h
* @brief XOSC driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_XOSC_H
#define __RP2350_XOSC_H
drivers/0x01_uart_cbm/Src/image_def.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file image_def.c
* @author Kevin Thomas
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file image_def.c
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
* @author Kevin Thomas
* @date 2026
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
__attribute__((section(".embedded_block"), used))
drivers/0x01_uart_cbm/Src/main.c
+36 -27
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@@ -1,31 +1,40 @@
/**
******************************************************************************
* @file main.c
* @author Kevin Thomas
* @brief UART demonstration: echo received characters in uppercase.
*
* Demonstrates hardware UART0 using the bare-metal UART driver.
* Characters typed into a terminal via a USB-to-UART adapter
* are echoed back in uppercase.
*
* Wiring:
* GPIO0 (TX) -> USB-to-UART adapter RX
* GPIO1 (RX) -> USB-to-UART adapter TX
* GND -> USB-to-UART adapter GND
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file main.c
* @brief UART demonstration: echo received characters in uppercase.
* @author Kevin Thomas
* @date 2026
*
* Demonstrates hardware UART0 using the bare-metal UART driver.
* Characters typed into a terminal via a USB-to-UART adapter
* are echoed back in uppercase.
*
* Wiring:
* GPIO0 (TX) -> USB-to-UART adapter RX
* GPIO1 (RX) -> USB-to-UART adapter TX
* GND -> USB-to-UART adapter GND
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_uart.h"
int main(void)
drivers/0x01_uart_cbm/Src/rp2350_reset.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_reset.c
* @author Kevin Thomas
* @brief Reset controller driver implementation for RP2350.
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.c
* @brief Reset controller driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset.h"
void reset_init_subsystem(void)
drivers/0x01_uart_cbm/Src/rp2350_reset_handler.c
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.c
* @author Kevin Thomas
* @brief Reset handler implementation for RP2350.
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.c
* @brief Reset handler implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset_handler.h"
#include "rp2350_stack.h"
#include "rp2350_xosc.h"
drivers/0x01_uart_cbm/Src/rp2350_stack.c
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_stack.c
* @author Kevin Thomas
* @brief Stack pointer initialization for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.c
* @brief Stack pointer initialization for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_stack.h"
void stack_init(void)
drivers/0x01_uart_cbm/Src/rp2350_uart.c
+31 -21
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@@ -1,27 +1,37 @@
/**
******************************************************************************
* @file rp2350_uart.c
* @author Kevin Thomas
* @brief UART0 driver implementation for RP2350.
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.c
* @brief UART0 driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_uart.h"
/** @brief Base address pointer for UART0 peripheral registers */
#define UART_BASE ((volatile uint32_t *) UART0_BASE)
/**
drivers/0x01_uart_cbm/Src/rp2350_xosc.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.c
* @author Kevin Thomas
* @brief XOSC driver implementation for RP2350.
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.c
* @brief XOSC driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_xosc.h"
void xosc_init(void)
drivers/0x01_uart_cbm/Src/vector_table.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file vector_table.c
* @author Kevin Thomas
* @brief Vector table with initial stack pointer and reset handler.
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file vector_table.c
* @brief Vector table with initial stack pointer and reset handler.
* @author Kevin Thomas
* @date 2026
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
extern uint32_t _stack_top;
drivers/0x02_blink_cbm/Inc/rp2350.h
+32 -23
View File
@@ -1,27 +1,36 @@
/**
******************************************************************************
* @file rp2350.h
* @author Kevin Thomas
* @brief RP2350 Device Peripheral Access Layer Header File.
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350.h
* @brief RP2350 Device Peripheral Access Layer Header File.
* @author Kevin Thomas
* @date 2026
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_H
#define __RP2350_H
drivers/0x02_blink_cbm/Inc/rp2350_delay.h
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_delay.h
* @author Kevin Thomas
* @brief Delay driver header for RP2350.
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.h
* @brief Delay driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_DELAY_H
#define __RP2350_DELAY_H
drivers/0x02_blink_cbm/Inc/rp2350_gpio.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_gpio.h
* @author Kevin Thomas
* @brief GPIO driver header for RP2350.
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.h
* @brief GPIO driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_GPIO_H
#define __RP2350_GPIO_H
drivers/0x02_blink_cbm/Inc/rp2350_led.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_led.h
* @author Kevin Thomas
* @brief LED driver header for RP2350.
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.h
* @brief LED driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_LED_H
#define __RP2350_LED_H
drivers/0x02_blink_cbm/Inc/rp2350_reset.h
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_reset.h
* @author Kevin Thomas
* @brief Reset controller driver header for RP2350.
*
* Provides subsystem reset release for IO_BANK0.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.h
* @brief Reset controller driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Provides subsystem reset release for IO_BANK0.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_H
#define __RP2350_RESET_H
drivers/0x02_blink_cbm/Inc/rp2350_reset_handler.h
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.h
* @author Kevin Thomas
* @brief Reset handler header for RP2350.
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.h
* @brief Reset handler header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_HANDLER_H
#define __RP2350_RESET_HANDLER_H
drivers/0x02_blink_cbm/Inc/rp2350_stack.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_stack.h
* @author Kevin Thomas
* @brief Stack pointer initialization header for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.h
* @brief Stack pointer initialization header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_STACK_H
#define __RP2350_STACK_H
drivers/0x02_blink_cbm/Inc/rp2350_uart.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_uart.h
* @author Kevin Thomas
* @brief UART0 driver header for RP2350.
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.h
* @brief UART0 driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_UART_H
#define __RP2350_UART_H
drivers/0x02_blink_cbm/Inc/rp2350_xosc.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.h
* @author Kevin Thomas
* @brief XOSC driver header for RP2350.
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.h
* @brief XOSC driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_XOSC_H
#define __RP2350_XOSC_H
drivers/0x02_blink_cbm/Src/image_def.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file image_def.c
* @author Kevin Thomas
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file image_def.c
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
* @author Kevin Thomas
* @date 2026
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
__attribute__((section(".embedded_block"), used))
drivers/0x02_blink_cbm/Src/main.c
+32 -22
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@@ -1,30 +1,40 @@
/**
******************************************************************************
* @file main.c
* @author Kevin Thomas
* @brief Blink demonstration: toggle onboard LED every 500 ms.
*
* Demonstrates GPIO output control using the blink driver.
* The onboard LED on GPIO 25 is toggled every 500 ms and the
* current state is reported over UART.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file main.c
* @brief Blink demonstration: toggle onboard LED every 500 ms.
* @author Kevin Thomas
* @date 2026
*
* Demonstrates GPIO output control using the blink driver.
* The onboard LED on GPIO 25 is toggled every 500 ms and the
* current state is reported over UART.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_led.h"
#include "rp2350_uart.h"
#include "rp2350_delay.h"
/** @brief Delay between LED state toggles in milliseconds */
#define BLINK_DELAY_MS 500
/**
drivers/0x02_blink_cbm/Src/rp2350_delay.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_delay.c
* @author Kevin Thomas
* @brief Delay driver implementation for RP2350.
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.c
* @brief Delay driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_delay.h"
void delay_ms(uint32_t ms)
drivers/0x02_blink_cbm/Src/rp2350_gpio.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_gpio.c
* @author Kevin Thomas
* @brief GPIO driver implementation for RP2350.
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.c
* @brief GPIO driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_gpio.h"
/**
drivers/0x02_blink_cbm/Src/rp2350_led.c
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_led.c
* @author Kevin Thomas
* @brief LED driver implementation for RP2350.
*
* High-level wrapper around the GPIO driver for LED control.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.c
* @brief LED driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level wrapper around the GPIO driver for LED control.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_led.h"
#include "rp2350_gpio.h"
drivers/0x02_blink_cbm/Src/rp2350_reset.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_reset.c
* @author Kevin Thomas
* @brief Reset controller driver implementation for RP2350.
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.c
* @brief Reset controller driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset.h"
void reset_init_subsystem(void)
drivers/0x02_blink_cbm/Src/rp2350_reset_handler.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.c
* @author Kevin Thomas
* @brief Reset handler implementation for RP2350.
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.c
* @brief Reset handler implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset_handler.h"
#include "rp2350_stack.h"
#include "rp2350_xosc.h"
drivers/0x02_blink_cbm/Src/rp2350_stack.c
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_stack.c
* @author Kevin Thomas
* @brief Stack pointer initialization for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.c
* @brief Stack pointer initialization for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_stack.h"
void stack_init(void)
drivers/0x02_blink_cbm/Src/rp2350_uart.c
+31 -21
View File
@@ -1,27 +1,37 @@
/**
******************************************************************************
* @file rp2350_uart.c
* @author Kevin Thomas
* @brief UART0 driver implementation for RP2350.
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.c
* @brief UART0 driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_uart.h"
/** @brief Base address pointer for UART0 peripheral registers */
#define UART_BASE ((volatile uint32_t *) UART0_BASE)
/**
drivers/0x02_blink_cbm/Src/rp2350_xosc.c
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.c
* @author Kevin Thomas
* @brief XOSC driver implementation for RP2350.
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.c
* @brief XOSC driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_xosc.h"
void xosc_init(void)
drivers/0x02_blink_cbm/Src/vector_table.c
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file vector_table.c
* @author Kevin Thomas
* @brief Vector table with initial stack pointer and reset handler.
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file vector_table.c
* @brief Vector table with initial stack pointer and reset handler.
* @author Kevin Thomas
* @date 2026
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
extern uint32_t _stack_top;
drivers/0x03_button_cbm/Inc/rp2350.h
+32 -23
View File
@@ -1,27 +1,36 @@
/**
******************************************************************************
* @file rp2350.h
* @author Kevin Thomas
* @brief RP2350 Device Peripheral Access Layer Header File.
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350.h
* @brief RP2350 Device Peripheral Access Layer Header File.
* @author Kevin Thomas
* @date 2026
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_H
#define __RP2350_H
drivers/0x03_button_cbm/Inc/rp2350_button.h
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_button.h
* @author Kevin Thomas
* @brief Button input driver header for RP2350.
*
* Push-button GPIO input driver with software debounce.
* The button pin is configured as active-low with internal
* pull-up; pressing the button connects the pin to GND.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_button.h
* @brief Button input driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Push-button GPIO input driver with software debounce.
* The button pin is configured as active-low with internal
* pull-up; pressing the button connects the pin to GND.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_BUTTON_H
#define __RP2350_BUTTON_H
drivers/0x03_button_cbm/Inc/rp2350_delay.h
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_delay.h
* @author Kevin Thomas
* @brief Delay driver header for RP2350.
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.h
* @brief Delay driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_DELAY_H
#define __RP2350_DELAY_H
drivers/0x03_button_cbm/Inc/rp2350_gpio.h
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_gpio.h
* @author Kevin Thomas
* @brief GPIO driver header for RP2350.
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.h
* @brief GPIO driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_GPIO_H
#define __RP2350_GPIO_H
drivers/0x03_button_cbm/Inc/rp2350_led.h
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_led.h
* @author Kevin Thomas
* @brief LED driver header for RP2350.
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.h
* @brief LED driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_LED_H
#define __RP2350_LED_H
drivers/0x03_button_cbm/Inc/rp2350_reset.h
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_reset.h
* @author Kevin Thomas
* @brief Reset controller driver header for RP2350.
*
* Provides subsystem reset release for IO_BANK0.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.h
* @brief Reset controller driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Provides subsystem reset release for IO_BANK0.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_H
#define __RP2350_RESET_H
drivers/0x03_button_cbm/Inc/rp2350_reset_handler.h
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.h
* @author Kevin Thomas
* @brief Reset handler header for RP2350.
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.h
* @brief Reset handler header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_HANDLER_H
#define __RP2350_RESET_HANDLER_H
drivers/0x03_button_cbm/Inc/rp2350_stack.h
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_stack.h
* @author Kevin Thomas
* @brief Stack pointer initialization header for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.h
* @brief Stack pointer initialization header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_STACK_H
#define __RP2350_STACK_H
drivers/0x03_button_cbm/Inc/rp2350_uart.h
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_uart.h
* @author Kevin Thomas
* @brief UART0 driver header for RP2350.
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.h
* @brief UART0 driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_UART_H
#define __RP2350_UART_H
drivers/0x03_button_cbm/Inc/rp2350_xosc.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.h
* @author Kevin Thomas
* @brief XOSC driver header for RP2350.
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.h
* @brief XOSC driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_XOSC_H
#define __RP2350_XOSC_H
drivers/0x03_button_cbm/Src/image_def.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file image_def.c
* @author Kevin Thomas
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file image_def.c
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
* @author Kevin Thomas
* @date 2026
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
__attribute__((section(".embedded_block"), used))
drivers/0x03_button_cbm/Src/main.c
+38 -27
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@@ -1,37 +1,48 @@
/**
******************************************************************************
* @file main.c
* @author Kevin Thomas
* @brief Button demonstration: debounced press mirrors to LED + UART report.
*
* Demonstrates GPIO input using the button driver. The onboard
* LED mirrors the button state and every edge transition is
* reported over UART.
*
* Wiring:
* GPIO15 -> One leg of push button
* GND -> Other leg of push button
* GPIO25 -> Onboard LED (no external wiring needed)
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file main.c
* @brief Button demonstration: debounced press mirrors to LED + UART report.
* @author Kevin Thomas
* @date 2026
*
* Demonstrates GPIO input using the button driver. The onboard
* LED mirrors the button state and every edge transition is
* reported over UART.
*
* Wiring:
* GPIO15 -> One leg of push button
* GND -> Other leg of push button
* GPIO25 -> Onboard LED (no external wiring needed)
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_button.h"
#include "rp2350_led.h"
#include "rp2350_uart.h"
#include "rp2350_delay.h"
/** @brief Button debounce window in milliseconds */
#define DEBOUNCE_MS 20
/** @brief Button polling interval in milliseconds */
#define POLL_DELAY_MS 10
/**
drivers/0x03_button_cbm/Src/rp2350_button.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_button.c
* @author Kevin Thomas
* @brief Button input driver implementation for RP2350.
*
* Configures a GPIO pin as an active-low input with internal
* pull-up and provides debounced press detection using a
* busy-wait confirmation delay.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_button.c
* @brief Button input driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures a GPIO pin as an active-low input with internal
* pull-up and provides debounced press detection using a
* busy-wait confirmation delay.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_button.h"
#include "rp2350_gpio.h"
#include "rp2350_delay.h"
drivers/0x03_button_cbm/Src/rp2350_delay.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_delay.c
* @author Kevin Thomas
* @brief Delay driver implementation for RP2350.
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.c
* @brief Delay driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_delay.h"
void delay_ms(uint32_t ms)
drivers/0x03_button_cbm/Src/rp2350_gpio.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_gpio.c
* @author Kevin Thomas
* @brief GPIO driver implementation for RP2350.
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.c
* @brief GPIO driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_gpio.h"
/**
drivers/0x03_button_cbm/Src/rp2350_led.c
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_led.c
* @author Kevin Thomas
* @brief LED driver implementation for RP2350.
*
* High-level wrapper around the GPIO driver for LED control.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.c
* @brief LED driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level wrapper around the GPIO driver for LED control.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_led.h"
#include "rp2350_gpio.h"
drivers/0x03_button_cbm/Src/rp2350_reset.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_reset.c
* @author Kevin Thomas
* @brief Reset controller driver implementation for RP2350.
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.c
* @brief Reset controller driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset.h"
void reset_init_subsystem(void)
drivers/0x03_button_cbm/Src/rp2350_reset_handler.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.c
* @author Kevin Thomas
* @brief Reset handler implementation for RP2350.
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.c
* @brief Reset handler implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, then branches
* to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset_handler.h"
#include "rp2350_stack.h"
#include "rp2350_xosc.h"
drivers/0x03_button_cbm/Src/rp2350_stack.c
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_stack.c
* @author Kevin Thomas
* @brief Stack pointer initialization for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.c
* @brief Stack pointer initialization for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_stack.h"
void stack_init(void)
drivers/0x03_button_cbm/Src/rp2350_uart.c
+31 -21
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@@ -1,27 +1,37 @@
/**
******************************************************************************
* @file rp2350_uart.c
* @author Kevin Thomas
* @brief UART0 driver implementation for RP2350.
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.c
* @brief UART0 driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_uart.h"
/** @brief Base address pointer for UART0 peripheral registers */
#define UART_BASE ((volatile uint32_t *) UART0_BASE)
/**
drivers/0x03_button_cbm/Src/rp2350_xosc.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.c
* @author Kevin Thomas
* @brief XOSC driver implementation for RP2350.
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.c
* @brief XOSC driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures the external crystal oscillator and enables the
* peripheral clock sourced from XOSC.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_xosc.h"
void xosc_init(void)
drivers/0x03_button_cbm/Src/vector_table.c
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file vector_table.c
* @author Kevin Thomas
* @brief Vector table with initial stack pointer and reset handler.
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file vector_table.c
* @brief Vector table with initial stack pointer and reset handler.
* @author Kevin Thomas
* @date 2026
*
* Placed in the .vectors section at the start of flash.
* The Thumb bit (bit 0 = 1) is automatically set by the
* linker for function pointers in Thumb mode.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
extern uint32_t _stack_top;
drivers/0x04_pwm_cbm/Inc/rp2350.h
+32 -23
View File
@@ -1,27 +1,36 @@
/**
******************************************************************************
* @file rp2350.h
* @author Kevin Thomas
* @brief RP2350 Device Peripheral Access Layer Header File.
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350.h
* @brief RP2350 Device Peripheral Access Layer Header File.
* @author Kevin Thomas
* @date 2026
*
* Memory-mapped register structures and peripheral base addresses
* for the RP2350 microcontroller (Cortex-M33 dual-core). All
* register offsets verified against the RP2350 datasheet
* (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_H
#define __RP2350_H
drivers/0x04_pwm_cbm/Inc/rp2350_delay.h
+29 -20
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@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_delay.h
* @author Kevin Thomas
* @brief Delay driver header for RP2350.
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.h
* @brief Delay driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Millisecond busy-wait delay calibrated for a 12 MHz clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_DELAY_H
#define __RP2350_DELAY_H
drivers/0x04_pwm_cbm/Inc/rp2350_gpio.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_gpio.h
* @author Kevin Thomas
* @brief GPIO driver header for RP2350.
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.h
* @brief GPIO driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration, set, clear, toggle, and read
* functions for the RP2350 GPIO pins 0-29.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_GPIO_H
#define __RP2350_GPIO_H
drivers/0x04_pwm_cbm/Inc/rp2350_led.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_led.h
* @author Kevin Thomas
* @brief LED driver header for RP2350.
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.h
* @brief LED driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level GPIO output / LED driver wrapping the
* low-level GPIO functions.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_LED_H
#define __RP2350_LED_H
drivers/0x04_pwm_cbm/Inc/rp2350_pwm.h
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_pwm.h
* @author Kevin Thomas
* @brief PWM driver header for RP2350.
*
* Provides PWM output on GPIO 25 (onboard LED) at approximately
* 1 kHz using PWM slice 4, channel B. Duty cycle is controllable
* from 0 to 100 percent.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_pwm.h
* @brief PWM driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Provides PWM output on GPIO 25 (onboard LED) at approximately
* 1 kHz using PWM slice 4, channel B. Duty cycle is controllable
* from 0 to 100 percent.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_PWM_H
#define __RP2350_PWM_H
drivers/0x04_pwm_cbm/Inc/rp2350_reset.h
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_reset.h
* @author Kevin Thomas
* @brief Reset controller driver header for RP2350.
*
* Provides subsystem reset release for IO_BANK0.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.h
* @brief Reset controller driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Provides subsystem reset release for IO_BANK0.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_H
#define __RP2350_RESET_H
drivers/0x04_pwm_cbm/Inc/rp2350_reset_handler.h
+31 -22
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@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.h
* @author Kevin Thomas
* @brief Reset handler header for RP2350.
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.h
* @brief Reset handler header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after reset. Performs stack initialization, XOSC
* setup, subsystem reset release, UART initialization,
* and branches to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_RESET_HANDLER_H
#define __RP2350_RESET_HANDLER_H
drivers/0x04_pwm_cbm/Inc/rp2350_stack.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_stack.h
* @author Kevin Thomas
* @brief Stack pointer initialization header for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.h
* @brief Stack pointer initialization header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM from the STACK_TOP and
* STACK_LIMIT values defined in rp2350.h.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_STACK_H
#define __RP2350_STACK_H
drivers/0x04_pwm_cbm/Inc/rp2350_uart.h
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_uart.h
* @author Kevin Thomas
* @brief UART0 driver header for RP2350.
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.h
* @brief UART0 driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Bare-metal UART0 driver supporting TX/RX on GPIO 0/1 at
* 115200 baud (12 MHz XOSC clock).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_UART_H
#define __RP2350_UART_H
drivers/0x04_pwm_cbm/Inc/rp2350_xosc.h
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_xosc.h
* @author Kevin Thomas
* @brief XOSC driver header for RP2350.
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_xosc.h
* @brief XOSC driver header for RP2350.
* @author Kevin Thomas
* @date 2026
*
* External crystal oscillator initialization and peripheral
* clock enable using the XOSC registers.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __RP2350_XOSC_H
#define __RP2350_XOSC_H
drivers/0x04_pwm_cbm/Src/image_def.c
+30 -21
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@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file image_def.c
* @author Kevin Thomas
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file image_def.c
* @brief RP2350 IMAGE_DEF block for boot ROM image recognition.
* @author Kevin Thomas
* @date 2026
*
* Must appear within the first 4 KB of flash for the boot ROM
* to accept the image.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdint.h>
__attribute__((section(".embedded_block"), used))
drivers/0x04_pwm_cbm/Src/main.c
+41 -30
View File
@@ -1,37 +1,48 @@
/**
******************************************************************************
* @file main.c
* @author Kevin Thomas
* @brief PWM demonstration: LED breathing effect via duty-cycle sweep.
*
* Demonstrates PWM output using the PWM driver. A signal on
* GPIO 25 (onboard LED) sweeps its duty cycle from 0% to 100%
* and back to produce a smooth breathing effect. The current
* duty is reported over UART.
*
* Wiring:
* GPIO0 -> UART TX (USB-to-UART adapter RX)
* GPIO1 -> UART RX (USB-to-UART adapter TX)
* GPIO25 -> Onboard LED (no external wiring needed)
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file main.c
* @brief PWM demonstration: LED breathing effect via duty-cycle sweep.
* @author Kevin Thomas
* @date 2026
*
* Demonstrates PWM output using the PWM driver. A signal on
* GPIO 25 (onboard LED) sweeps its duty cycle from 0% to 100%
* and back to produce a smooth breathing effect. The current
* duty is reported over UART.
*
* Wiring:
* GPIO0 -> UART TX (USB-to-UART adapter RX)
* GPIO1 -> UART RX (USB-to-UART adapter TX)
* GPIO25 -> Onboard LED (no external wiring needed)
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_pwm.h"
#include "rp2350_uart.h"
#include "rp2350_delay.h"
/** @brief PWM duty cycle increment per step */
#define SWEEP_STEP 5
/** @brief Delay between PWM sweep steps in milliseconds */
#define SWEEP_DELAY_MS 50
/**
@@ -40,7 +51,7 @@
* @param buf output buffer (at least 4 bytes)
* @retval None
*/
static void _uint8_to_str(uint8_t value, char *buf)
static void uint8_to_str(uint8_t value, char *buf)
{
uint8_t idx = 0;
if (value >= 100)
@@ -59,7 +70,7 @@ static void _uint8_to_str(uint8_t value, char *buf)
static void print_duty(uint8_t duty)
{
char buf[4];
_uint8_to_str(duty, buf);
uint8_to_str(duty, buf);
uart_puts("Duty: ");
uart_puts(buf);
uart_puts("%\r\n");
drivers/0x04_pwm_cbm/Src/rp2350_delay.c
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_delay.c
* @author Kevin Thomas
* @brief Delay driver implementation for RP2350.
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_delay.c
* @brief Delay driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Busy-wait millisecond delay calibrated for a 12 MHz clock
* (3600 loop iterations per millisecond).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_delay.h"
void delay_ms(uint32_t ms)
drivers/0x04_pwm_cbm/Src/rp2350_gpio.c
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_gpio.c
* @author Kevin Thomas
* @brief GPIO driver implementation for RP2350.
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_gpio.c
* @brief GPIO driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* SIO-based GPIO configuration using IO_BANK0 and PADS_BANK0
* register structs defined in rp2350.h. All register offsets
* verified against the RP2350 datasheet (RP-008373-DS-2).
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_gpio.h"
/**
drivers/0x04_pwm_cbm/Src/rp2350_led.c
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_led.c
* @author Kevin Thomas
* @brief LED driver implementation for RP2350.
*
* High-level wrapper around the GPIO driver for LED control.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_led.c
* @brief LED driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* High-level wrapper around the GPIO driver for LED control.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_led.h"
#include "rp2350_gpio.h"
drivers/0x04_pwm_cbm/Src/rp2350_pwm.c
+32 -22
View File
@@ -1,28 +1,38 @@
/**
******************************************************************************
* @file rp2350_pwm.c
* @author Kevin Thomas
* @brief PWM driver implementation for RP2350.
*
* Configures PWM slice 4, channel B on GPIO 25 (onboard LED).
* Uses a wrap value of 9999 with no clock division, yielding
* approximately 650 Hz from the ROSC system clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_pwm.c
* @brief PWM driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures PWM slice 4, channel B on GPIO 25 (onboard LED).
* Uses a wrap value of 9999 with no clock division, yielding
* approximately 650 Hz from the ROSC system clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_pwm.h"
/** @brief Base address pointer for PWM peripheral registers */
#define PWM ((volatile uint32_t *) PWM_BASE)
/**
drivers/0x04_pwm_cbm/Src/rp2350_reset.c
+30 -21
View File
@@ -1,25 +1,34 @@
/**
******************************************************************************
* @file rp2350_reset.c
* @author Kevin Thomas
* @brief Reset controller driver implementation for RP2350.
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset.c
* @brief Reset controller driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Releases IO_BANK0 from reset and waits until the subsystem
* is ready.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset.h"
void reset_init_subsystem(void)
drivers/0x04_pwm_cbm/Src/rp2350_reset_handler.c
+31 -22
View File
@@ -1,26 +1,35 @@
/**
******************************************************************************
* @file rp2350_reset_handler.c
* @author Kevin Thomas
* @brief Reset handler implementation for RP2350.
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, PWM, then
* branches to main().
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_reset_handler.c
* @brief Reset handler implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Entry point after power-on or system reset. Initializes the
* stack, XOSC, subsystem resets, UART, PWM, then
* branches to main().
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_reset_handler.h"
#include "rp2350_stack.h"
#include "rp2350_xosc.h"
drivers/0x04_pwm_cbm/Src/rp2350_stack.c
+29 -20
View File
@@ -1,24 +1,33 @@
/**
******************************************************************************
* @file rp2350_stack.c
* @author Kevin Thomas
* @brief Stack pointer initialization for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_stack.c
* @brief Stack pointer initialization for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_stack.h"
void stack_init(void)
drivers/0x04_pwm_cbm/Src/rp2350_uart.c
+31 -21
View File
@@ -1,27 +1,37 @@
/**
******************************************************************************
* @file rp2350_uart.c
* @author Kevin Thomas
* @brief UART0 driver implementation for RP2350.
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
* @file rp2350_uart.c
* @brief UART0 driver implementation for RP2350.
* @author Kevin Thomas
* @date 2026
*
* Configures UART0 on GPIO 0 (TX) and GPIO 1 (RX) at 115200
* baud using the 12 MHz XOSC clock.
*
* MIT License
*
* Copyright (c) 2026 Kevin Thomas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "rp2350_uart.h"
/** @brief Base address pointer for UART0 peripheral registers */
#define UART_BASE ((volatile uint32_t *) UART0_BASE)
/**

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